Category: Class 6

You can Download Samacheer Kalvi 6th Social Science Book Solutions Guide Pdf, Tamilnadu State Board help you to revise the complete Syllabus and score more marks in your examinations.

Tamilnadu Samacheer Kalvi 6th Social Science Civics Solutions Term 3 Chapter 3 Road Safety

Samacheer Kalvi 6th Social Science Road Safety Textual Evaluation

I. Answer the following :

Question 1.
Prepare the slogans for road safety.
Answer:
Slogans on Road Safety

1. Alert today – Alive tomorrow.
2. Leave sooner, drive slower, live longer.
3. Speed thrills but kills.
4. Be alert! Accidents hurt.
5. Drive carefully, to live joyfully.
6. A little care makes accidents rare.
7. Fast-drive could be your last drive.
8. Driving faster can cause disaster
9. Chance takers are accident makers.

Question 2.
Identify the following signs.

Answer:
a. No U Turn
b. No Entry
c. Cross Road
d. Hospital

Question 3.
Discuss about the statistics of 2017 accidents data.
Answer:

1. Nearly three persons died every ten minutes in road accidents across India last year.
2. The Report, prepared by the Transport Research Wing of the Ministry of Road Transport and highways, discovered that a total of 4,64,910 road accident were reported by States and Union territories in the calender year of 2017, claiming 1,47,913 lives and causing injuries to 4,70,975 persons.
3. The subject of road safety is an important one. Victims of hit and run cases would now be compensated for up to Rs one million in case of road accident fatalities.
4. Among vehicle categories involved in road accidents, two-wheelers accounted for the highest share (33.9%) in total accidents and fatalities (29.8%) in 2017.
5. However there has been a decline in the total number of road accidents as compared with the year 2016. In percentage terms the number of accidents in 2017 was lower by 3.3 percent and injuries 4.8 percent over that of the previous year.

Question 4.
Debate : Is Wearing helmet necessary?
Answer:

1. It is important for motor cyclists to understand the risks of riding without a helmet.
2. Riders who do not wear helmets are at risk of suffering traumatic brain injury if they are in an accident.
3. Without protection, the head is vulnerable to a traumatic impact in an accident even when travelling at low speeds.
4. Wearing helmet is absolutely necessary for riders and pillion riders.

Question 5.
Draw posters related to road safety.
Answer:

Samacheer Kalvi 6th Social Science Road Safety Additional Questions

I. Choose the correct answer:

Question 1.
Mandatory road signs are_________generally in shape.
(a) Circular
(b) Oval
(c) Square
(d) Hexagonal
Answer:
(a) Circular

Question 2.
The pedestrian crossing was instituted in Britain in_________
(a) 1930
(b) 1932
(e) 1934
(d) 1936
Answer:
(c) 1934

Question 3.
Children above_________ years of age should occupy the back seat.
(a) 8
(b) 12
(c) 10
(d) 14
Answer:
(b) 12

Question 4.
The Zebra crossing with black and white stripes was developed after
(a) Cold war
(b) Civil war
(c) First World war
(d) Second World war
Answer:
(d) Second World war

Question 5.
Red rings or circles give_________ instructions
(a) Positive
(b) Negative
(c) Caution
(d) None of the above
Answer:
(b) Negative

II. Fill in the blanks:

1. Cautionary road signs are generally in_________ shape.
2. Informatory road signs are generally in_________ shape.
3. We should wait until_________ a signal appears before proceeding.
4. Amber means_________
5. Traffic signs are there to_________traffic.
6. Answer:
7. Triangular
8. Rectangular
9. Caution
10. green
11. Regulate

III. Answer the following questions :

Question 1.
Explain the three types of traffic signs.
Answer:

1. Mandatory road signs are the ones that give order regarding do’s and don’ts and are to be followed strictly. They are generally circular in shape.
2. Cautionary road signs are the ones that was in the road rules regarding the road situation ahead. These signs are generally in triangular shape.
3. Informatory road signs are the ones that give information regarding directions, destination etc. Informatory signs are generally rectangular in shape.

Question 2.
What do the three colours Red, Amber and Green signify?
Answer:

1. Red means stop – wait behind the stop line.
2. Amber means CAUTION.
3. Green means Go-Proceed ahead ensuing that the way is clear.

Question 3.
Mention about the languages of the road.
Answer:

1. Road signs, markings, traffic signals and other traffic devices are there to guide the road users and hence the languages of the road.
2. Traffic signals are there to regulate traffic, warn about hazards and to guide the road user.

Question 4.
How should children use the pavements?
Answer:
Children should be taught to use the pavements. When walking on the road,

1. Walk on any side of the road if there are food paths.
2. On roads without food path walk on your extreme right side facing the oncoming traffic.
3. Use Zebra crossing, foot over bridge and subways to cross the roads.
4. Children below 8 years of age should cross the road with the help of elders.

Question 5.
What should not be done by children while crossing the road?
Answer:

1. Do not cross the road hastily by running.
2. Do not cross the road in front of or in between parked vehicles.
3. Do not try to cross the road from blind comers, turnings where you are not visible to the vehicle drivers.
4. Do not jump over the railings to cross the road.

You can Download Samacheer Kalvi 6th Science Book Solutions Guide Pdf, Tamilnadu State Board help you to revise the complete Syllabus and score more marks in your examinations.

Tamilnadu Samacheer Kalvi 6th Science Solutions Term 3 Chapter 3 Chemistry in Everyday Life

Samacheer Kalvi 6th Science Chemistry in Everyday Life Textual Evaluation

I. Choose the appropriate answer :

Question 1.
Soaps were originally made from _______
(a) proteins
(b) animal fats and vegetable oils
(c) chemicals extracted from the soil
(d) foam booster
Answer.
(b) animal fats and vegetable oils

Question 2.
The saponification of a fat or oil is done using ……….. solution for hot process.
a. potassium hydroxide
b. sodium hydroxide
c. sodium chloride
d. sodium hydroxide
Answer:
b. sodium hydroxide

Question 3.
Gypsum is added to the cement for _______
(a) fast setting
(b) delayed setting
(c) hardening
(d) making paste
Answer:
(b) delayed setting

Question 4.
Phenol is ……..
a. carbolic acid
b. acetic acid
c. benzoic acid
d. hydrochloric acid
Answer:
a. carbolic acid

Question 5.
Natural adhesives are made from _______
(a) Protein
(b) fat
(c) starch
(d) vitamins
Answer:
(c) starch

II. Fill in the blanks :

1. _______ gas causes tears in our eyes, while cutting onions.
2. Water, coconut oil and ________ are necessary for soap preparation.
3. _______ is called as farmer’s best friend.
4. _______ fertilizer is ecoffiendly.
5. _______ is an example for natural adhesive.

Answers:

1. Propanethial s-oxide
2. animal fat
3. Earthworm
4. Organic
5. Starch dissolved in water

III. True or False. If False, give the correct statement :

Question 1.
Concentrated phenol is used as a disinfectant.
Answer:
False. Low concentrated phenol is used as a disinfectant.

Question 2.
Gypsum is largely used in medical industries.
Answer:
False. Gypsum is largely used in cement preparation.

Question 3.
Plaster of Paris is obtained from heating gypsum.
Answer:
True.

Question 4.
Adhesives are the substances used to separate the components.
Answer:
False. Adhesives are the substances used to join the components.

Question 5.
NPK are the primary nutrients for plants.
Answer:
True.

IV. Match the following :

Answer:

V. Arrange the following statements in correct sequence :

1. Pour that solution into an empty match box, soap can be obtained after drying.
2. Take necessary quantity of water in ajar.
3. Then add coconut oil drop by drop and stir it well.
4. Add concentrated sodium hydroxide in the jar and allow it to cool.
5. Try this soap to wash your hand kerchief.
6. Cover your work area with old newspaper.

Answers:

1. Cover your work area with old newspaper.
2. Take necessary quantity of water in a jar.
3. Add concentrated sodium hydroxide in the jar and allow it to cool.
4. Then add coconut oil drop by drop and stir it well.
5. Pour that solution into an empty match box, soap can be obtained after drying.
6. Try this soap to wash your hand kerchief.

VI. Analogy :

Question 1.
Urea : Inorganic fertilizer;
Vermi compost: _______
Answer:
Organic fertilizer.

Question 2.
_______ : Natural adhesives ;
Cello tape : Artifical adhesives.
Answer:
Starch dissolved in water.

VII. Give Very Short Answer:

Question 1.
What are the three main constituents of soap?
Answer:
The three main constituents of soap are Lye (Sodium hydroxide), coconut oil and water.

Question 2.
What are the two different types of molecules found in the soap?
Answer:

1. Loving water molecules.
2. Hating water molecules.

Question 3.
Give an example of inorganic fertilizer.
Answer:
The Inorganic fertilizers are Urea, Ammonium sulphate and Super phosphate.

Question 4.
Mention any three physical properties of phenol?
Answer:

1. Weak acid
2. High volatile
3. White crystalline powder.

Question 5.
Explain the uses of plaster of paris.
Answer:
Uses of plaster of pairs :

1. In making black board chalks.
2. In surgery for setting fractured bones.
3. For making casts for statues and toys etc.
4. In the construction industry.

Question 6.
What are the ingredients of the cement?
Answer:

1. Limestone
2. Clay
3. Gypsum

Question 7.
Why gypsum is used in cement production?
Answer:
Gypsum is added to control the setting of cement.

VIII. Give Short Answer:

Question 1.
Why earthworm is called a farmer’s friend?
Answer:
Earthworms take organic wastes as food and produce compost castings. So earthworms are known as Farmers’ Friends because of the multitude of services they provide to improve soil health and consequently plant health.

Question 2.
Explain the process of manufacturing cement.
Answer:
The cement is manufactured by crushing of naturally occurring minerals such as lime stone, clay and gypsum through a milling process.

Question 3.
What are uses of Gypsum?
Answer:
Uses of Gypsum :

1. It is used as fertilizers.
2. It is used in the process of making cement.
3. It is used in the process of making Plaster of Paris.

IX. Answer in detail:

Question 1.
How are detergents manufactured?
Answer:
Manufacture of Detergents:-
Materials used:
Acid slurry, Soda ash (or) Sodium Carbonate, Trisodium phosphate (TSP), sodium tripolyphosphate (STPP), Carboxy Methyl Chloride (or) Cellulose, Glauber’s salt, colour perfume and brightner.

Preparation:

1. Acid slurry is first neutralised.
2. Then neutralised Acid Slurry is mixed with Soda ash and kept for one hour for completion of reaction.
3. Other ingredients such as Trisodium phosphate (TSP), Sodium tripolyphosphate (STPP), Carboxy Methyl Chloride (or) Cellulose, Glauber’s salt, colour, perfume, brightner are then blended to the neutralised Acid Slurry with continuous mixing.
4. Then the mixture is dried.
5. Now we get detergent powder.

X. Questions based on Higher Order Thinking Skills

Question 1.
Ravi is a farmer; he rears many cattle in his farm. His field has many bio wastes. Advise Ravi how to change this bio waste to compost by using vermi-composting techniques. Explain the benefits of vermi castings.
Answer:

1. A cement tub is to be constructed to a height of 2’A feet and the breadth 3 feet.
2. Put the Bio-wastes in the cement tub with 5 cm height.
3. Add few earthworms with the Bio-waste.
4. Then add saw dust, or coir waste and husk on the top of Bio-wastes.
5. Then add sand to form a layer of 3 cm.
6. Then add garden waste on the layer of sand.
7. Then spray with water.
8. All layers must be moistioned with water.
9. After 10 to 15 days, we get vermicompost manure.

Benefits:

1. It is rich in all essential nutrients.
2. It improves soil structure, texture and prevent soil corrosion.
3. It contains valuable hormones like auxons, gibberellin etc.
4. It neutralizes the soil protection.

XI. Project :

1. Take 100 ml of hot water in a glass jar.
2. Add 50 gram of maida powder in the hot water and stir it well.
3. A paste like substances are formed. Add a small quantity of copper sulphate for a long use.
4. Now you test this paste by binding your damaged book.

Answer:
Activity to be done by the students themselves

Samacheer Kalvi 6th Science Chemistry in Everyday Life Intext Activities

Activity 1

Question 1.
Discuss with your group and list out few chemicals which we use in our home and school.
_______________________
_______________________
Answer:
We are using the following Chemicals in our home and school:-
Detergents, Air fresheners, Disinfectant, Glass cleaning chemicals, Detergents, Shampoo, Lubricants, Metal polishers, Rest room cleaning chemicals, Naphthalene, Bathing soap, Hit.

Activity 2

Preparation of Soap
Materials Required: 35 ml of water, 10 g of Lye (Sodium hydroxide), 60 ml of coconut oil.

Process : Cover your work area with old newspaper. Take 35 ml of water in a jar. Add 10 gram of concentrated sodium hydroxide and allow it to cool.

Then add 60 ml of coconut oil drop by drop and stir it well. Pour that solution into an empty match box, soap can be obtained after getting dried.

Try this soap to wash your handkerchief.
Answer:
Activity to be done by the students themselves

Activity 3

Collect various kinds, of soap’s wrapper. Complete the following table based on the information provided in the wrapper.

Inference : Nature of the soaps varies according to its constituents.
Answer:

Activity 4

Make a visit to agriculture field in your area. List out the various crops and type of fertilizers used there.

Answer:

Activity 5

Take three empty tumblers of same size and name them as A, B and C. Add two tea spoonful of cement in each of the container. Then pour one tea spoonful of water in container A and two spoonful of water in B and three spoonful of water in C.

After an hour, observe which container of the cement set fast? Touch the containers and see if they are warm or cool. From this experiment, we understand that water and cerhent should be mixed in a certain ratio for fast setting.
Answer:
Activity to be done by the students themselves

Samacheer Kalvi 6th Science Chemistry in Everyday Life Additional Questions

I. Choose the appropriate answer:

Question 1.
_______ change results in the change of the substance.
(a) Physical
(b) Chemical
(c) Biological
(d) Zoological
Answer:
(b) Chemical

Question 2.
The percentage composition of Nitrogen in Ureas is ………..
(a) 23%
(b) 13%
(c) 21%
(d) 46%
Answer:
(d) 46%

Question 3.
_______ is the important material in construction industry.
(a) Soap
(b) Adhesives
(c) Cement
(d) Fertilizers

Question 4.
Who invented cement?
(a) Edison
(b) Joseph Aspdin
(c) Robert Hooke
(d) Robert Brown
Answer:
(b) Joseph Aspdin

Question 5.
_______ concrete is a composite material by mixing iron mesh with cement.
(a) Mortar
(b) m-sand
(c) Reinforced cement
(d) Gypsum
Answer:
(c) Reinforced cement

Question 6.
The molecular formula of ‘Plaster of Paris’ is
(a) CaSO₄. ½ H₂O
(b) CaSO₄. H₂O
(c) CaSO₄. 2H₂O
(d) CaSO₄. 3H₂O
Answer:
(a) CaSO₄. ½ H₂O

Question 7.
The chemical name of gypsum is .
(a) Magnesium sulphate hydrate
(b) Calcium sulphate hemihydrate
(c) Carbolic acid
(d) Calcium sulphate dihydrate
Answer:
(d) Calcium sulphate dihydrate

Question 8.
is used in making blackboard chalks.
(a) Plaster of Paris
(b) Gypsum
(c) Epsom
(d) Phenol
Answer:
(a) Plaster of Paris

Question 9.
_________ is used as surgical antiseptic.
(a) Epsom
(b) Phenol
(c) Gypsum
(d) None of these

II. Fill up the blanks:

1. Burning of paper is the best example of _______ change.
2. _______ is the branch of science which deals with the study of particles around us.
3. Salt is a combination of the chemicals _______ and _______.
4. We could prepare soft idly as a result of a chemical change named _______ takes place in the idly batter.
5. We are using _______ to remove strong stains on the clothes.
6. _______ help plant grow and restore soil fertility.
7. _______ is the organic tertillzer.
8. _______ invented Portland cement.
9. _______ is the medicine for skin problems.
10. Calcium sulphate hemihydrate is called as _______
11. _______ is used in mouthwash in low concentrations.
12. The adhesive used in puncture shop is _______

Answers:

1. Chemical
2. Chemistry
3. Sodium, Chlorine
4. fermentation
5. Wash powder
6. Organic fertilizers
7. Compost
8. Joseph Aspdin
9. Epsom
10. Plaster of parisl
11. Pheno
12. Artificial adhesivel

III. True or False. If False, give the correct statement:

Question 1.
Water boiling into water vapour is an example of chemical change.
Answer:
False. Water boiling into water vapour is an example of Physical change.

Question 2.
Chemist identify gypsum as a natural indicator.
Answer:
False. Chemist identify turmeric powder as a natural indicator.

Question 3.
The water we drink is the combination of hydrogen and oxygen.
Answer:
True.

Question 4.
When we soak onion in water, then the irritation is increased.
Answer:
False. When we soak onion in water then the irritation is reduced.

Question 5.
Mortar is a paste of cement and sand mixed with water.
Answer:
True.

Question 6.
Fertilizers containing only plant or animal based materials or those synthesized by microorganisms are called inorganic fertilizers.
Answer:
False. Fertilizers containing only plant or animal based materials or those synthesized by microorganisms are called organic fertilizers,

Question 7.
‘Portland’ cement resembled the high-quality building stones found in Portland, England.
Answer:
True.

Question 8.
Reinforced Cement Concrete is a mixture of cement, sand and gravel.
Answer:
False. Concrete js a mixture of cement, sand and gravel.

Question 9.
Gypsum is used in the process of making cement.
Answer:
True

Question 10.
Gypsum is used in improving plant growth in agriculture.
Answer:
False. Epsom js usecj jn improving plant growth in agriculture.

IV. Match the following :

Answer:

1. – d
2. – c
3. – e
4. – a
5. – b.

V. Analogy:

Question 1.
H₂O : Water :: NaCl: ________
Answer:
Sodium Chloride.

Question 2.
Used to join components : Adhesives :: Clean the body _______
Answer:
Soaps.

Question 3.
Organic fertilizer : Compost:: Inorganic fertilizer _______
Answer:
Super phosphate.

Question 4.
Used as fertilizer : Gypsum :: Helps nerves function properly : _______
Answer:
Epsom.

Question 5.
Making casts for statues : Plaster of paris :: Used as mouthwash : _______
Answer:
phenol.

VI. Give Short Answer :

Question 1.
Define physical change.
Answer:
In physical change only the shape, size (or) volume changes; the state of the matter may also change.

Question 2.
What is the use of indicator?
Answer:
The use of indicator is to identify whether material is acid (or) base medium.

Question 3.
How to prepare soft idly?
Answer:
We could prepare soft idly as a result of chemical change named fermentation takes place in the idly batter. During fermentation the idly batter undergoes a chemical change by bacteria.

Question 4.
If we soak onion in water the irritation is reduced. Why?
Answer:
It is due to the presence of a chemical, propanethial s-oxide in onion. This is easily volatile. When we cut onion, some of the cells are damaged and the chemical come out. It becomes vapour and reach our eyes result in irritation and tears in eyes. If we soak onion in water, the chemical is diluted and it cannot reach our eyes. So the irritation is reduced.

Question 5.
Write some materials prepared by chemical changes.
Answer:
Soaps, fertilizers, cement, gypsum, epsom, plaster of paris, phenol are the materials.

Question 6.
Define Principal nutrients.
Answer:
Nitrogen (N), Phosphorous (P) and Potassium (K) are the three important nutrients among the various nutrients needed for plant growth. These three are called as Principal Nutrients.

Question 7.
Differentiate between organic and inorganic fertilizer.
Answer:
Organic fertilizers:

1. Plant (or) animal based materials synthesized by micro-organisms
2. Prepared easily.
3. Economical
4. Example : Vermicompost, Compost

Inorganic fertilizers:

1. Natural elements by making them undergo chemical changes.
2. Prepared complicated
3. Not economical
4. Example : Urea, Super phosphate, Ammonium Phosphate.

Question 8.
Why the cement is called as Portland cement?
Answer:
It was named Portland cement because it resembled the high quality building stones found in Portland, England.

Question 9.
What are the uses of cement?
Answer:

1. It is used to construct houses.
2. It is used to construct dams, bridges.

Question 10.
What is the use of Epsom Salt?
Answer:

1. In medical, it eases the stress and relaxes the body.
2. In agriculture, it improves plant growth.
3. It is used as medicine for skin problems.
4. Helps muscles and nerves function properly.

Question 11.
Define Adhesives.
Answer:
A paste like material which is used to join two components together is called adhesive.

VII. Answer in detail :

Question 1.
How soaps clean clothes?
Answer:

1. We are using wash powder to remove strong stains on the clothes.
2. The detergent molecules have two sides, one side “water-loving”, other “water-hating”.
   
3. Water hating goes and joins with dirt and oil in the cloth while the water-loving joins with the water molecules.
4. When you agitate the cloth the dirt is surrounded by many molecules and is taken away from the cloth.
5. The cloth becomes clean, and the dirt surrounded by the detergent molecules float in the water making it dirty.

You can Download Samacheer Kalvi 6th Social Science Book Solutions Guide Pdf, Tamilnadu State Board help you to revise the complete Syllabus and score more marks in your examinations.

Tamilnadu Samacheer Kalvi 6th Social Science Civics Solutions Term 3 Chapter 2 Local Bodies – Rural And Urban

Samacheer Kalvi 6th Social Science Local Bodies – Rural And Urban Textual Evaluation

I. Choose the correct answer:

Question 1.
_________ is set up w ith several village panchayats.
(a) Panchayat Union
(b) District Panchayat
(c) Taluk
(d) Revenue village
Answer:
(a) Panchayat Union

Question 2.
……………… is National Panchayat Raj Day.
(a) January 24
(b) July 24
(c) November 24
(d) April 24
Answer:
(d) April 24

Question 3.
The oldest urban local body in India is _________
(a) Delhi
(b) Chennai
(c) Kolkata
(d) Mumbai
Answer:
(b) Chennai

Question 4.
The district has the highest number of Panchayat Unions.
(a) Vellore
(b) Thiruvallore
(c) Villupuram
(d) Kanchipuram
Answer:
(c) Villupuram

Question 5.
The head of a corporation is called a_________
(a) Mayor
(b) Commissioner
(c) Chair Person
(d) President
Answer:
(a) Mayor

II. Fill in the blanks :

1. ______ is the fist state in India to introduce town Panchayat.
2. The Panchayat Raj Act was enacted in the year______
3. The tenure of the local body representative is______ years.
4. ______ is the first municipality in Tamil Nadu.

Answer:

1. Tamilnadu
2. April 24,1992
3. five
4. Walajahpet in Vellore Dt.

III. Match the following

Answer:

IV. Answer the following :

Question 1.
Is there any corporation in your district? Name it.
Answer:
Chennai Corporation.

Question 2.
What is the need for local bodies?
Answer:
In order to fulfil the requirements of the people and to involve them directly in governance, there is need for an effective system of local bodies.

Question 3.
What are the divisions of a rural local body?
Answer:
The rural local bodies are Categorized into Village Panchayats, Panchayat Unions and District Panchayats.

Question 4.
What are the divisions of an Urban local body?
Answer:
The Urban local bodies are Categorized into City Municipal Corporations, Municipalities and Town Panchayats.

Question 5.
Who are the representatives elected in a Village Panchayat?
Answer:
The elected representatives of the Village Panchayat are

1. Panchayat President
2. Ward members
3. Councillor
4. District Panchayat Ward Councillor.

Question 6.
List out a few functions of corporations.
Answer:

1. Drinking-Water Supply
2. Street Light
3. Maintenance of Clean Environment
4. Primary Health facilities
5. Corporation Schools
6. Birth and Death registration etc.

Question 7.
List out a few means of revenue of village Panchayats.
Answer:
Revenue of Village Panchayats are

1. House Tax
2. Professional Tax
3. Tax on shops
4. Water charges
5. Specific fees for property tax
6. Specific fees for transfer of immovable property
7. Funds from Central and State Governments, etc.

Question 8.
When are Grama Sabha meetings convened? What are the special on those days?
Answer:

1. The Grama Sabha meetings are Convened on January 26, May 1, August 15, and October 2.
2. These days are celebrated as National festival days every year.

Question 9.
What are the special features of Panchayat Raj system?
Answer:
Special features of Panchayat Raj .

1. Grama Sabha
2. Three tier local body governance.
3. Reservations
4. Panchayat elections
5. Tenure
6. Finance Commission
7. Account and Audit, etc.

Question 10.
What is the importance of Grama Sabha?
Answer:

1. Grama Sabha is essential for the effective functioning of Village Panchayat.
2. It enhances public participation in the planning and implementation of schemes for social benefit.

HOTS:

Question 1.
Local bodies play an important role in the development of villages and cities. How?
Answer:

1. Local self government has been playing a vital role.
2. The local bodies provide services to the local community.
3. They act as an instrument of democratic self-government.
4. This level of government is recoginsed by the people as they are close to the citizens and involve them in the decision making process.
5. These institutions perform the functions related to education, sanitation, public health, industry, etc and try to tackle the day-to-day problems of the local people. In a big country like India, the Union government and State government are unable to know the local problems of the citizens. Only the local people can suggest the right solution to local problems.
6. These bodies lessen the workload of Central and State governments. They are the best schools of democracy.
7. Therefore the local bodies play an important role in the development of villages and cities.

VI. Activities:

Question 1.
Find out the number of local bodies in your district and list them
Answer:

HOTS

Question 1.
Why are there only 31 district panchayats, but 32 districts?
Answer:

1. There are 32 districts but there are only 31 districts panchayats because there is no such body for chennai.
2. It is because the district of chennai is falls in urban district. District rural development agency’s ex-officio chairman is the district collector.
3. In the state of Tamil Nadu there are total 32 districts including chennai but there is no district panchyat.

Samacheer Kalvi 6th Social Science Local Bodies-Rural And Urban Additional Question

I. Choose the correct answer:

Question 1.
Tamil Nadu there is corporation in __________
(a) Namakkal
(b) Perambalur
(c) Thiruvarur
(d) Erode
Answer:
(d) Erode

Question 2.
All local bodies have a reservation of percent for women ……………….
(a) 30
(b) 25
(c) 33
Answer:
(c) 33

Question 3.
The administrative oi Beer of a Municipality is __________
(a) Engineer
(b) Executive Officer
(c) Ward Member
(d) Deputy Commissioner
Answer:
(b) Executive Officer

Question 4.
The Tamil Nadu Panchayats (Amendment) Act,2016 has fixed percent reservation for women in panchayat Raj institutions.
(a) 40
(b) 50
(c) 60
Answer:
(b) 50

Question 5.
The grass root level, democratic institution is __________
(a) Town Panchayat
(b) Village Panchayat
(c) Grama Sabha
(d) Panchayat Union
Answer:
(c) Grama Sabha

II. Fill in the blanks:

1. The __________district has the most number of municipalities.
2. A __________ is between a village and a city.
3. A city Municipal Corporation has a Commissioner who is an __________ officer.
4. The Nilgris and Perambalur district have the lowest number of __________
5. Vehicle charges are one of the revenue sources to __________
6. Mahatma Gandhi advocated __________ as the foundation of India’s political system.
7. The Tamil Nadu State Election Commission is situated in __________ Chennai.

Answer:

1. Kanchipuram
2. Town Panchayat
3. IAS
4. Panchayat Unions
5. City Municipal Corporation
6. Panchayat Raj
7. Koyambedu

III. Match the Following

Answer:

1. c
2. e
3. a
4. b
5. d

IV. Answer the following questions :

Question 1.
Mention the list of corporations in Tamil Nadu.
Answer:
The list of corporations in Tamil Nadu :

1. Chennai
2. Madurai
3. Coimbatore
4. Tiruchirapalli
5. Salem
6. Tirunelveli
7. Erode
8. Thoothukudi
9. Tiruppur
10. Vellore
11. Dindigul
12. Thanjavur.

Question 2.
What is a Municipality?
Answer:

1. A Municipality is found in the level below the City Municipal Corporation.
2. These areas have a population of more than one lakh and a high amount of revenue.

Question 3.
What is a Town Panchayat?
Answer:

1. A Town Panchayat has about 10,000 population.
2.  A Town Panchayat is between a village and a city.
3. Tamil Nadu was the first state to introduce a town panchayat in the whole of India.

Question 4.
Mention the officials of a City Municipal Corporation?
Answer:

1. A City Municipal Corporation has a Commissioner. He is an Indian Administrative Service (IAS) officer.
2. Government officials are deputed as Commissioners for the Municipalities.
3. The Administrative officer of a Municipality is an Executive Officer (EO).

Question 5.
What is a Village Panchayat?
Answer:

1. Village Panchayats are the local bodies of villages.
2. They act as a link between the people and the government.
3. Villages are divided into wards based on their population.
4. The representatives are elected by the people.

Question 6.
What is Panchayat Union?
Answer:

1. Many Village Panchayats join to form a Panchayat Union.
2. A Councillor is elected from each Panchayat.
3. These councillors will elect a Panchayat Union Chairperson among themselves.
4. A Vice-Chairperson is also elected.
5. A Block Development Officer (BDO) is the administrative head of a Panchayat Union.

Question 7.
What is a District Panchayat?
Answer:

1. A District Panchayat is formed in every district.
2. A district is divided into wards on the basis of 50,000 population.
3. The ward members are elected by the Village Panchayats.
4. The members of the District Panchayat elect the District Panchayat Committee Chairperson.
5. They provide essential services and facilities to the rural population.

Question 8.
Mention the officials of a City Municipal Corporation.
Answer:

1. Mayor of the City Municipal Corporation and the Municipal Chairperson are the elected representatives of the people.
2. The people elect them.
3. The Corporation Deputy Mayor and the Municipal Vice Chair-person are elected by the ward councillors.

Question 9.
Mention the obligating functions of the Village Panchayat.
Answer:
The obligating functions of the Village Panchayat:

1. Water supply
2. Street lighting
3. Cleaning roads
4. Drainage and sewage pipes system
5. Laying down roads
6. Activation of Central and State Government Schemes.

Question 10.
Mention the revenue of the City Municipal Corporation.
Answer:
The revenue of the City Municipal Corporation :

1. House Tax
2. Water Tax
3. Tax on shopping Complexes
4. Professional Tax
5. Entertainment Tax
6. Vehicle charges
7. Funds by Central and State governments, etc.

Question 11.
Mention the role of women in the Local Self government.
Answer:

1. All local bodies have a reservation of 33% for women.
2. In 2011, Local Bodies election, 38% seats were won by women.
3. As per the Tamil Nadu Panchayats (Amendment) Act 2016, 50% reservation for women is being fixed in Panchayat Raj institutions.

V. HOTS:

Question 1.
What do you know about Panch at Awards?
Answer:

1. Panchayat Awards are distributed by Ministry of Panchayat Raj, Government of India every year in the month of April.
2. Best performing panchayats are selected from all over India.
3. Panchayat that performs well in all aspects is chosen as Winners.
4. In 2018, Digambarpur in West Bengal became the best Grama Panchayat of India.
5. A survey was conducted to find out the best Grama Panchayat in India among 2.5 lakh Grama Panchayats.
6. Out of these, the Ministry of Panchayat Raj finalised three top states.
7. The ranking was prepared based on different seven factors that includes system of planning, quality of planning, different activities and level of co-ordination etc.
8. Finally it was Digambarpur chosen as the best one in the country.
9. Karnataka and Sikkim were the other two states that were finalised in top three.
10. In India, April 24th is celebrated as National Panchayat Raj Diwas every year. This day marks the passing of the constitution (73rd Amendment) Act; 1992 that came into force with effect from 24 April 1993.

Question 2.
Write down the Key difference between Urban and Rural Basis for Comparison.
Answer:

You can Download Samacheer Kalvi 6th Science Book Solutions Guide Pdf, Tamilnadu State Board help you to revise the complete Syllabus and score more marks in your examinations.

Tamilnadu Samacheer Kalvi 6th Science Solutions Term 3 Chapter 6 Hardware and Software

Samacheer Kalvi 6th Science Hardware and Software Textual Evaluation

I Choose the correct answer :

Question 1.
Find out the part that is not found in CPU?
(a) Mother Board
(b) SMPS
(c) RAM
(d) Mouse
Answer:
(d) Mouse

Question 2.
Which of the following is correct?
a. Free and Open source
b. Free and Traditional software
c. Passive and Open source
d. Passive and Traditional source
Answer:
a. Free and Open source

Question 3.
LINUX is a
(a) Paid Software
(b) Licensed Software
(c) Free and Proprietary software
(d) Free and Open-source software
Answer:
(d) Free and Open-source software

Question 4.
Find out Paid and Proprietary software from the given list
a.- Windows
b. MAC OS
c. Adobe Photoshop
d. All the above
Answer:
d. All the above

Question 5.
_______ is a Operating System
(a) Android
(b) Chrome
(c) Internet
(d) Pendrive

IV. Match the following :

Answer:

III. Short Answer:

Question 1.
What are Hardware and Software?
Answer:
Hardware:

1. Hardware is the parts of the computer which we can touch and feel.
2. Hardware includes input and output devices, Cabinet, Hard disk, Mother Board, SMPS, CPU, RAM, CD Drive and Graphics card.

Software :

1. Software are programmed and coded application to process the input information.
2. The software processes the data by converting the input information into coding or programmed language.
3. Touching and feeling is not possible. But, we can see the functions of the software in the form of output.

Question 2.
What do you mean by Operating System? How does it work?
Answer:

1. System Software (Operating System) is software that makes the hardware devices process the data inputted by the user and to display the result on the output devices like Monitor.
2. Without the operating system, computer cannot function on its own.
3. Some of the popular operating system are Linux, Windows, Mac, Android etc.

Question 3.
What is Free and Open Source Software? Give any two examples?
Answer:

1. Free and open software is available at free of cost and can be shared to many end-users.
2. Free software is editable and customizable by the user and this leads to update or development of new software.
3. Examples: 1. Linux, 2. Geogebra.

Samacheer Kalvi 6th Science Hardware and Software Additional Questions

I. Choose the appropriate answer:

Question 1.
_____ is a device comprising both hardware and software.
(a) Microwave Oven
(b) Car
(c) Bike
(d) Computer
Answer:
(d) Computer

Question 2.
Which of the following is correct
(a) Free and Open source software
(b) Free and Licensed software
(c) Free and Traditional software
(d) Passive and Traditional source software
Answer:
(a) Free and Open source software

Question 3.
_____ existed before the World Wide Web.
(a) Whatsapp
(b) Email
(c) Facebook
(d) Google
Answer:
(b) Email

Question 4.
Windows is a
(a) Paid software
(b) Licensed software
(c) Free and Open-source software
(d) Free and Proprietary software
Answer:
(a) Paid software

Question 5.
_____ is one of the example of application program.
(a) Drawing tools
(b) Language
(c) Linker
(d) Device driver
Answer:
(a) Drawing tools

Question 6.
The license of the software would not be provided unless it is _____
(a) Collected
(b) Purchased
(c) dismantled
(d) sold
Answer:
(b) Purchased

II. Fill up the blanks:

1. _______ is lifeless without software in a computer.
2. _______ are programmed and coded applications to process the input information.
3. Software is divided into _______ types based on the process.
4. _______ is a developing software to control the internal computer operation.
5. _______ software is available at free of cost and can be shared to many end users.
6. _______ is the Paid and Proprietary Software.

Answer:

1. Hardware
2. Software
3. two
4. Linker
5. Free and Open
6. Adobe Photoshop

III. Give Short Answer:

Question 1.
How can we classify the software?
Answer:
The software is divided into two types based on the process. They are

1. System software
2. Application software

Question 2.
Give some examples of System Softwares.
Answer:
Some of the Popular Operating system are LINUX, Windows, Mac, Android etc.

Question 3.
What is open source initiative?
Answer:
The open source initiative is an organization dedicated to promote open source software.

Question 4.
Define – Application Software.
Answer:

1. Application software is a program (or) a group of programs designed for the benefit of end user to work on computer.
2. The application programs can be installed in the hard disk for the usuage on a particular computer.

Question 5.
What is the classification of System Software?
Answer:
System software is divided into two types :

1. System Management Program.
2. Developing Software.

Question 6.
Give the classification of Application Software?
Answer:

1. General Purpose Software.
2. Specific Purpose Software.

Question 7.
Give some examples of Specific Purpose Software?
Answer:

1. Reservation System.
2. Attendance System.
3. Billing System.
4. Report card Generator.

Question 8.
What are the two forms of System and Application Software?
Answer:
The Operating System and application Software are available in two forms. They are:

1. Free and Open Source.
2. Paid and Proprietary Software.

IV. Answer in detail :

Question 1.
Draw the flow chart of software classification.
Answer:

You can Download Samacheer Kalvi 6th Social Science Book Solutions Guide Pdf, Tamilnadu State Board help you to revise the complete Syllabus and score more marks in your examinations.

Tamilnadu Samacheer Kalvi 6th Social Science Economics Solutions Term 2 Chapter 1 Economics An Introduction

Samacheer Kalvi 6th Social Science Economics An Introduction Textual Evaluation

I. Fill in the blanks:

1. The producers of food grains are ______
2. Collection of honey is a ______ occupation.
3. The conversion of raw materials into finished goods is called ______
4. According to Gandhiji the villages are ______ of the nation.
5. The percentage of population in the cities of Tamil Nadu is ______

Answer:

1. farmers
2. Primary
3. manufacturing
4. backbone
5. 47 Percent

II. Match the following:

1. Cattle rearing – Secondary occupation
2. Food processing – Services
3. Iron & Steel Industry – Primary occupation
4. Telephone – Agro based industry
5. Cotton Industry – Tertiary occupation

Answer:

1. Cattle rearing – Primary occupation
2. Food processing – Agro based industry
3. Iron & Steel Industry – Secondary occupation
4. Telephone – Services (or) Tertiary occupation
5. Cotton Industry – Agro based industry (or) Secondary occupation

III. Match and find the odd pair:

1. Small scale Industry – Transaction of Money
2. Forest based Industries – Information Technology
3. Services – Paper Industries
4. Banking – Cattle rearing

Answer:

1. Small scale Industry – Cattle rearing
2. Forest based Industries – Paper Industries
3. Services – Information Technology
4. Banking – Transaction of Money

IV. Choose the correct answer:

1. Agriculture is a (Primary / Secondary) occupation
2. Economic activities are divided on the basis of (ownership / use)
3. Sugar Industries are (Primary / Secondary) activity
4. Agro based industry (Cotton / Furniture)
5. Dairy farming is a (Public sector / Co-operative sector)

Answer:

1. Primary
2. use
3. Secondary
4. Cotton
5. Co-operative sector

V. Answer the following questions:

Question 1.
Sandhai – Define
Answer:
In villages once in a week or month, all things are sold in a particular place at a specific time to meet the needs of the people. That is called Sandai.
What is called barter system?

1. The system of exchanging goods for other goods is called barter system.
2. This was followed in olden days.
3. For example, exchange a bag of rice for enough clothes.

Question 2.
What is trade?
Answer:
The action of buying and selling goods and services is called trade.

Question 3.
What is Savings?
Answer:
The amount from the income which is left for future needs after consumption is called sayings.

Question 4.
What was the necessity for the invention of money?
Answer:

1. When people exchanged commodities, they might have faced, certain problems when comparing the differences in the value of commodity.
2. To solve this problem, people invented a tool called money.

Question 5.
What was the reason for the development of settlements near water bodies?
Answer:

1. Rivers acts as the main source for cultivation of crops.
2. So early man settled permanently near the rivers.

Question 7.
What are called secondary occupation?
Answer:

1. The raw materials obtained from the primary activities are converted into finished products through machinery on a large scale.
2. These activities involve secondary occupation.

Question 8.
Name the city centred industries.
Answer:
Cement, iron, and Aluminium industries, sea food processing are some of the city centered industries.

VI. Answer the following in detail:

Question 1.
List out the important primary occupations of your district.
Answer:
Some of the primary occupation are agriculture, crop production, animals husbandry, fisheries, foresting and mining. It also includes gazing, hunting, gathering.

Question 2.
Mention the manufacturing industries found in your district.
Answer:

1. Cotton textiles
2. Spinning and weaving
3. Food processing industries
4. Beedi production
5. Wind power generations

Question 3.
How are the industries classified on the basis of raw materials?
Answer:
On the basic of raw materials industries are classified as

1. Agro Based Industries – Cotton textiles, Sugar mills and Food processing.
2. Forest Based Industries – Paper mills, Furniture making, Building materials.
3. Mineral Based Industries – Cement, Iron, Aluminium Industries. .
4. Marine Based Industries – Sea food processing.

Question 4.
Write down the occupations in the service sector.
Answer:

1. Transport – Roadways, railways waterways, airways
2. Communication – Post, Telephone, information Technology etc.
3. Trade – Procurment of goods, selling
4. Banking – Money transactions, banking services

Question 5.
What do you know about the features of cities?
Answer:

1. A city is a large human settlement.
2. High density of population.
3. Four way roads, flyovers, sky scrapers, parks.
4. Educational institution, hospital, Government offices.
5. Private and public industries and technological institutions.
6. Employment opportunities permanent monthly income, basic requirements are

VII. Fill in the tabular column given below:

Samacheer Kalvi 6th Social Science Economics An Introduction Intext Questions

HOTS

Question 1.
Imagine if money disappears one day?
Answer:

1. In our daily life we utilize many things. These things are sold in shops. To buy and sell commodities we use money. If we save money it is good for us and the country.
2. Money is the lubrication for the movement of goods. If these contracts symbolized by money disappeared, there would be instant chaos. All activity would grind to a halt.

Samacheer Kalvi 6th Social Science Economics An Introduction Intext Activities

Activity – 3

Fill up the given table.
Answer:

Activity – 4
Put ✓ mark in appropriate box
Answer:

Samacheer Kalvi 6th Social Science Economics An Introduction Additional Questions

I. Fill In the blanks:

1. Things which are produced in villages are brought to
2. The permanent settlements of early man were called
3. The root of our economy is
4. The raw material for sugar is
5. Banks help in of money.

Answer:

1. Sandhai
2. Villages
3. Agriculture
4. Sugare cane
5. Circulation

II. Match the following:

Answer:

1. d
2. a
3. e
4. b
5. c

III. Find the odd pair:

IV. Choose the correct answer and fill in the appropriate column:

1. Coal miner
2. Automobile assembling plant
3. Grocery store
4. Helicopter pilot
5. Fisherman
6. Firefighters
7. Cashier
8. Delivery man
9. Oil well
10. Furniture maker
11. Timber cutters
12. Cotton farmer
13. Oil refinery.

Answer:

V. Answer the following questions :

Question 1.
What art consumer goods?

1. The finished goods which are bought from the market to fulfill the daily needs of the consumers is called consumer goods.
2. Example: Rice, Cloth, Bicycle etc.

Question 2.
Mention a few primary activities.
Answer:
Agriculture, Cattle rearing, fishing, mining, collection of fruits, nuts, honey, rubber, resin and medicinal herbs, lumbering etc are primary activities.

VI. Give a detailed answer :
Question 1.
What is economics? Why is if so important?
Answer:

1. Economics is the study of how societies, governments, business establishments, households and individuals allocate their scarce resources.
2. The study of economics can also provide valuable knowledge for making decisions
   in everyday life.
3. Economics is about the study of scarcity and choice.
4. By studying how markets work, our young people also learn how to make efficient choices in managing their own scarce resources, such as time and money.

You can Download Samacheer Kalvi 6th Maths Book Solutions Guide Pdf, Tamilnadu State Board help you to revise the complete Syllabus and score more marks in your examinations.

Tamilnadu Samacheer Kalvi 6th Maths Solutions Term 2 Chapter 3 Bill, Profit and Loss Ex 3.1

Question 1.
A School purchases some furniture and gets the following bill.

(i) What is the name of the store?
(ii) What is the serial number of the bill?
(iii) What is the cost of a blackboard?
(iv) How many sets of benches and desks does the school buy?
(v) Verify whether the total bill amount is correct.
Solution:
(i) Mullai Furniture Mart, Thanjavur
(ii) Serial No. 728
(iii) Cost of a blackboard is ₹ 3000
(iv) 50 sets
(v) Yes, the total bill amount is correct.

Question 2.
Prepare a bill for the following books of biographies purchased from Maruthu Book Store, Chidambaram on 12.04.2018 bearing the bill number 507.
10 copies of Subramanya Bharathiar @ ₹ 55 each, 15 copies of Thiruvalluvar @ ₹ 75 every 12 copies of Veeramamunivar @ ₹ 60 each and 12 copies of Thiru. Vi.Ka @ ₹ 70 each.
Solution:

Question 3.
Fillup the appropriate boxes in the following table.

Solution:
(i) Here Cost price < Selling price
Profit = S.P – C.P = 120 – 100 = ₹ 20
Here S.P > C.P
Profit = S.P – C.P = 120 – 110 = ₹ 10
(iii) Profit = ₹ 20
Profit = S.P. – C.P
⇒ 20 = S.P. – 120
⇒ 20 + 120 = S.P
⇒ S.P = ₹ 140
(iv) C.P = ₹ 100
S.P = ₹ 90
Here S.P < C.P
Loss = 100 – 90 = ₹ 10
(v) Profit = S.P – C.P
⇒ 25 = S.P – 120
⇒ 25 + 120 = S.P
⇒ S.P = ₹ 145

Question 4.
Fill up the appropriate boxes in the following table.

Solution:
(i) S.P. = M.P – Discount
S.P = ₹ 130
Here S.P > C.P
Profit = S.P – C.P = 130 – 110 = ₹ 20
(ii) S.P = M.P – Discount = 130 – 10 = ₹ 120
Here S.P > C.P
Profit = S.P – C.P = ₹ 120 – ₹ 110 = ₹ 10
(iii) S.P = M.P – Discount = 130 – 30 = ₹ 100
Here S.P < C.P
Loss = 110 – 100 = ₹ 10
(iv) C.P = ₹ 110
M.P = ₹ 120
Loss = ₹ 10
Loss = C.P – S.P
⇒ 10 = 110 – SP
⇒ SP = 110 – 10 = ₹ 100
Discount = M.P – S.P = 120 – 100 = ₹ 20
(v) M.P = ₹ 120
Discount = ₹ 10
Discount = M.P – S.P
⇒ 10 = 120 – S.P
⇒ S.P = 120 – 10 = ₹ 110
Profit = ₹ 20
Profit = S.P – C.P
⇒ 20 = 110 – C.P
⇒ C.P = 110 – 20 = 90

Question 5.
Rani bought a set of bangles for Rs 310. Her neighbour liked it most. So, Rani sold it to her for Rs 325. Find the profit or loss to Rani.
Solution:
CP = Rs 310
SP = Rs 325
Profit = SP – CP = Rs 325 – Rs 310 = Rs 15

Question 6.
Sugan bought a Jeans pant for ₹ 750. It did not fit him. He sold it to his friend for ₹ 710. Find the profit or loss to sugan.
Solution:
C.P of the Jeans pant = ₹ 750
S.P of the Jeans pant = ₹ 710
Here S.P < C.P
Loss = C.P – S.P = 750 – 710 = ₹ 40
Loss = ₹ 40

Question 7.
Somu bought a second hand bike for Rs 28,000 and spent Rs 2,000 on its repair. He sold it for Rs 30,000. Find his profit or loss.
Solution:
CP = Rs 28,000 + Rs 2,000
CP = Rs 30,000
SP = Rs 30,000
CP = SP
No profit / Loss

Question 8.
Muthu has a car worth ₹ 8,50,000 and he wants to sell it at a profit of ₹ 25,000. What should be the selling price of the car? Solution:
Cost price of the car = ₹ 8,50,000
Expected profit = ₹ 25,000
We know that profit = S.P – C.P
25000 = S.P – 8,50,000
⇒ 25,000 + 8,50,000 = S.P
⇒ S.P = 8,75,000
Selling Price of the car should be ₹ 8,75,000

Question 9.
Valarmathi sold her pearl set for Rs 30,000 at profit of Rs 5,000. Find the cost price of the pearl set.
Solution:
SP = Rs 30,000
Profit = Rs 5,000
CP = SP – Profit
= Rs 30,000 – Rs 5,000
= Rs 25,000

Question 10.
If Guna marks his product to be sold for ₹ 325 and gives a discount of ₹ 30, then find the S.P.
Solution:
Marked Price of the Product = ₹ 325
Discount = ₹ 30
Selling Price = M.P – Discount = 325 – 30 = ₹ 295
S.P. = ₹ 295

Question 11.
A man buys a chair for 1,500. He wants to sell it at a profit of Rs 250 after making a discount of Rs 100. What is the M.P. of the chair?
Solution:
CP = Rs 1,500
Profit = Rs 250
SP = CP + Profit
= Rs 1,500 + Rs 250
= Rs 1,750
Discount = Rs 100
SP = MP – Discount
MP = SP + Discount
= Rs 1,750 + Rs 100
= Rs 1,850

Question 12.
Amutha marked her home product of pickle as ₹ 300 per pack. But she sold it for only ₹ 275 per pack. What was the discount offered by her per pack?
Solution:
M.P of the pickle = ₹ 300
S.P = ₹ 275
S.P = M.P – Discount
⇒ 275 = 300 – Discount
⇒ Discount = 300 – 275 = ₹ 25
Discount per pack = ₹ 25

Question 13.
Valavan bought 24 eggs for Rs 96. Four of them were broken and also he had a loss of Rs 36 on selling them. What is the selling price of one egg?
Solution:
Cost of 24 eggs = Rs 96
Since 4 of the eggs were broken, the number of remaining eggs = 24 – 4 = 20
Since the loss is Rs 36
Selling price of 20 eggs
SP = CP – Loss
= Rs 96 – Rs 36
= Rs 60
∴ Cost of 1 egg = Rs 60 / 20 = Rs 3

Question 14.
Mangai bought a cell phone for ₹ 12,585. It fell down. She spent ₹ 500 on it repair. She sold it for ₹ 7,500. Find her profit or loss.
Solution:
Cost of the cell phone = ₹ 12,585
Spent on repairs = ₹ 500
Cost price = Cost of cell phone + repair charge = 12,585 + 500 = ₹ 13,085
S.P. = 7,500
Here C.P > S.P
∴ It is loss
Loss = C.P – S.P = 13,085 – 7500 = ₹ 5,585
Loss = ₹ 5,585

Objective Type Questions

Question 15.
Discount is subtracted from ……… to get S.P.
(a) M.P
(b) C.P
(c) Loss
(d) Profit
Solution:
(a) M.P

Question 16.
‘Overhead expenses’ is always included in _____.
(a) S.P
(b) C.P.
(c) Profit
(d) Loss
Solution:
(b) C.P.

Question 17.
There is no profit or loss when
(a) C.P = S.P
(b) C.P > S.P
(c) C.P < S.P
(d) M.P = Discount
Solution:
(a) C.P = S.P

Question 18.
Discount = M.P _____
(a) Profit
(b) S.P
(c) Loss
(d) C.P
Solution:
(b) S.P

You can Download Samacheer Kalvi 6th Maths Book Solutions Guide Pdf, Tamilnadu State Board help you to revise the complete Syllabus and score more marks in your examinations.

Tamilnadu Samacheer Kalvi 6th Maths Solutions Term 1 Chapter 5 Statistics Ex 5.2

Question 1.
Fill in the blanks.

(iii) Representation of data by using pictures is known as _______
Solution:
(i) 150 balls
(ii)
(iii) Pictograph

Question 2.
Draw a pictograph for the give data.

(Choose your own suitable scales)
Solution:
Pictograph of Number of computers sold.

Question 3.
The following table shows the number of tourists who visited the places in the month of May. Draw a pictograph.

(Choose your own suitable scale)
Solution:
The pictograph for the number of tourists who visited various places:

Question 4.
The following pictograph shows the number of students playing different games in a school

Answer the following questions.
(i) Which is the most popular game among the students?
(ii) Find the number of students playing kabaddi?
(iii) Which two games are played by an equal number of students?
(iv) What is the difference between the number of students playing Kho-Kho and Hockey?
(v) Which is the least popular game among the students?
Solution:
(i) Kabaddi is the most popular game among students.
(ii) There are 11 × 10 = 110 students playing kabaddi.
(iii) Kho-Kho and Hockey are played by an equal number of students.
(iv) Difference is 90 – 90 = 0.
(v) Basketball is the least popular game among students.

Objective Type Questions

Question 5.
The representation of‘one picture to many objects’ in a pictograph is called
(a) Tally mark
(b) Pictoword
(c) Scaling
(d) Frequency
Solution:
(c) Scaling

Question 6.
The representation of ‘one picture too many objects’ in a Pictograph is called _____
(a) Tally mark
(b) Pictoword
(c) Scaling
(d) Frequency
Solution:
(c) Scaling

Question 7.
A Pictograph is also known as ______
(a) Pictoword
(b) Pictogram
(c) Pictophrase
(d) Pictograph
Solution:
(b) Pictogram

You can Download Samacheer Kalvi 6th Science Book Solutions Guide Pdf, Tamilnadu State Board help you to revise the complete Syllabus and score more marks in your examinations.

Tamilnadu Samacheer Kalvi 6th Science Solutions Term 1 Chapter 1 Measurements

Samacheer Kalvi 6th Science Measurements Textual Evaluation

I. Choose the correct answer.

Question 1.
The girth of a tree can be measured by
(a) metre scale
(b) metre rod
(e) plastic ruler
(d) measuring tape
Answer:
(d) measuring tape

Question 2.
The conversion of 7 m into cm gives
(a) 70 cm
(b) 7 cm
(c) 700 cm
(d) 7000 cm
Answer:
(c) 700 cm

Question 3.
Quantity that can be measured Is called
(a) Physical quantity
(b) Measurement
(c) unit
(d) motion
Answer:
(a) Physical quantity

Question 4.
Choose the correct one
(a) km > mm > cm > m
(b) km > mm > m > cm
c) km > m > cm > mm
(d) km > cm > m > mm
Answer:
(c) km > m > cm > mm

Question 5.
While measuring length of an object using a ruler, the position of your eye should be
(a) Left side of the point.
(b) Vertically above the point where the measurement is to be taken.
(c) Right side of the point
(d) Any where according to one’s convenience.
Answer:
(b) Vertically above the

II. True or False.

1. We can say that mass of an object is 126 kg.
2. Length of one’s chest can be measured by using metre scale.
3. Ten millimetres makes one centimetre.
4. A hand span is a reliable measure of length.
5. The SI system of units is accepted everywhere in the world.

Answers:

1. True
2. False
3. True
4. False
5. True

III. Fill in the blanks.

1. SI Unit of length is symbolically represented as _____
2. 500 gm = _____ kilogram
3. Distance between Delhi and Chennai can be measured in _____
4. 1 m = _____ cm.
5. km = _____ m.

Answers:

1. m
2. 0.5
3. Kilometre
4. 100
5. 5000

IV. Analogy

Question 1.
Sugar: Beam balance; Lime juice?
Answer:
Measuring Jar.

Question 2.
Height of a person : cm; length of your sharpened pencil lead?
Answer:
mm (mull metre)

Question 3.
Milk: volume; vegetables?
Answer:
mass

V. Match the following :

Answer:

VI. Complete the given table

Answer:

VII. Arrange in increasing order of unit.

Question 1.
1 Metre, 1 centimetre, 1 kilometre, and 1 millimetre.
Answer:
1 millimetre < 1 centimetre < 1 Metre < 1 kilometre.

VIII. Find the answer for the following questions within the grid.

1. 10^-3 is one _____
2. SI Unit of time _____
3. Cross view of reading for a measurement leads to _____
4. _____ is the one what a clock reads.
5. _____ is the amount of substance present in an object
6. _____ can be taken to get the final reading of the recordings of different of students for a single measurement.
7. _____ is a fundamental quantity.
8. _____ shows the distance covered by an automobile.
9. A tailor use _____ to take measurements to stitch a cloth.
10. Liquids are measured with this physical quantity.

Answers:

1. Millimetre
2. second
3. error
4. Time
5. Mass
6. Average
7. Length
8. Odometer
9. Tape
10. Litre

IX. Answer in a word or two.

Question 1.
What is the full form of SI system?
Answer:
An international system of unit

Question 2.
Name any one instrument used for measuring mass.
Answer:
Beam balance.

Question 3.
Find the odd one out: Kilogram, millimetre, centimetre, nanometre.
Answer:
Kilogram

Question 4.
What is the SI Unit of mass?
Answer:
Kilogram.

Question 5.
What are the two parts present in a measurement?
Answer:

1. multiple
2. sub

X. Answer in a sentence or two.

Question 1.
Define measurement.
Answer:
The comparison of an unknown quantity with some known quantity is known as measurement.

Question 2,
Define mass?
Answer:
Mass is the measure of the amount of matter in an object.

Question 3.
The distance between two places is 43.65 km. Convert it into metre and cm. 0
Answer:
(a) Convert km into metre
1 km = 1000m
∴ 43.65 km = 43.65 × 1000 = 43650.00 = 43650
= 43650 m.

(b) Convert km into cm.
1 km = 1000 m
1 m = 100 cm
1 km = 1000 × 100 cm
1 km = 100000 cm
∴ 43.65 km = 43.65 × 100000 = 4365000.00
= 4365000 cm.

Question 4.
What are the rules to be followed to make an accurate measurement with scale?
Answer:

1. To avoid the parallax error.
2. Your eye must be exactly in front of vertically above the point where the measurement has to be taken.

XI. Solve the following.

Question 1.
The distance between your school and your house is 2250 m. Express this distance in kilometre.
Answer:
Distance between school and house is 2250 m.
1000 m = 1 km
∴ 2250 m = 2250 ÷ 1000 = 2.25 km.

Question 2.
While measuring the length of a sharpened pencil, reading of the scale at one end is 2.0 cm and at the other end is 12.1 cm. What is the length of the pencil?
Answer:
The difference between the two readings is the length of the pencil.
= 12.1 cm – 2.0 cm
= 10.1 cm or 10 cm and 1 mm.

XII. Write in detail.

Question 1.
Explain two methods those you can use to measure the length of a curved line.
Answer:
Measuring the length of a curved line, by two methods.
First method – using a string.

1. Draw a curved line AB on the paper.
2. Place a string along the curved line.
3. Make sure that the string covers e very bit of the curved line.
4. Mark the points where the curved line begins and ends on the string.
5. Now stretch the string along the length of a meter scale.
6. Measure the distance between two markings of the string.
7. This will give the length of a curved line.

Second method – using a divider.

1. Draw a curved line AB on a paper.
2. Separate the legs of the divider by 0.5 cm or 1 cm using a ruler.
3. Place it on the curved line starting from one end. Mark the position of the other end.
4. Move it along the line again and again cutting the line into number of segments of equal lengths.
5. The remaining parts of the line can be measured using a scale.
6. Count the number of segments.
7. Length of the line = (No. of segments × length of each segment) + length of the left over part.

Question 2.
Fill in the following chart.

Answer:

Samacheer Kalvi 6th Science Measurements Additional Questions

I. Choose the correct answer:

Question 1.
In which SI unit, you can measure you height?
(a) Kilogram
(b) Litre
(c) Metre
(d) Second
Answer:
(c) Metre

Question 2.
What is the unit of electric current in SI system?
(a) Kelvin
(b) Ampere
(c) seconds
(d) Volt.
Answer:
(b) Ampere

Question 3.
_____ is used to measure the accurate time of the activity.
(a) Clock
(b) Watch
(c) Stop clock
(d) Sundial
Answer:
(c) Stop dock

Question 4.
These are the measurements used in measuring the volume of liquid.
(a) cylinder
(b) pipettes
(c) burettes
(d) All.
Answer:
(d) All

Question 5.
S.I unit for Volume is _____
(a) m²
(b) m
(c) m³
(d) none
Answer:
(c) m³

Question 6.
Twenty decimetre is equal to _____
(a) 2 km
(b) 20 cm
(c) 2 metre
(d) 200 mm
Answer:
(c) 2 metre

Question 7.
_____ is used to measure mass.
(a) Stop clock
(b) Beam balance
(c) Sundial
(d) Graduated cylinder
Answer:
(b) Beam balance

Question 8.
The metric system of units was created by the _____ in 1790.
(a) Greek
(b) Australians
(c) Russians
(d) French
Answer:
(d) French

Question 9.
The moon’s gravitational pull is one _____ of the earth’s pull.
(a) seventh
(b) sixth
(c) fifth
(d) fourth
Answer:
(b) Sixth

II. Find whether the following sentences are true or false. If false Correct the statement.

Question 1.
Kerosene is measured with the help of the graduated cylinder.
Answer:
True.

Question 2.
Length is a fundamental quantity.
Answer:
True.

Question 3.
On moon, the gravitational force is greater than earth.
Answer:
False. On moon the gravitational force is lesser than earth.

Question 4.
An electronic balance is a device used to find accurate mass.
Answer:
True.

Question 5.
Speedometer is a device used for indicating distance travelled by an automobile.
Answer:
False. Odometer js a device used for indicating distance travelled by an automobile.

Question 6.
A ruler or scale used now a days to measure length was invented by William Bedwell.
Answer:
True.

Question 7.
Length, mass and time are some of the derived quantities.
Answer:
False. Length, mass, and time are some of the fundamental quantities.

Question 8.
Leaves and piece of paper are heavier things.
Answer:
False. Leaves and piece of paper are lighter things.

Question 9.
National physical laboratory is located in Delhi.
Answer:
True.

III. Analogy.

Question 1.
Potatoes : Kilogram; Water?
Answer:
Litre.

Question 2.
Stop clock : accurate time; _______ : accurate weight
Answer:
Electronic balance.

Question 3.
Mass : Balance; Length?
Answer:
measuring tape.

Question 4
Amount of matter: mass; Gravitational Pull?
Answer:
Weight.

IV. Answer the following questions in one or two words.

Question 1
What are the materials needed to find the length of a banana?
Answer:
A meter scale, a string or thread, sketch pen..

Question 2.
What formula is used to measure area of your class room?
Answer:
My class room area = Length × Breadth

Question 3.
Give an example of a device used to find the accurate measurement of weight.
Answer:
Electronic balance.

Question 4.
In earlier days, which instruments are used to measure time?
Answer:
Sand clock and Sun dial.

Question 5.
What are the clocks used to measure a smaller duration of time?
Answer:
Electronic clock, Stop watch.

Question 6.
Who invented a ruler or scale?
Answer:
William Bedwell.

Question 7.
Which alloy is used to make the standard metre rod?
Answer:
An alloy of Platinum and iridium.

V. Match the following

Answers:
a. ii
b. iii
c. iv
d. i

VI. Answer the following In one or two sentences:

Question 1.
What is the international system of units or SI units?
Answer:
For the sake of uniformity all over the world, we have adopted a common set of units to express measurements that are called as an International system of units or SI units.

Question 2.
Give some examples of larger length measures.

1. Height of the building,
2. Length of a banner,
3. Height of lamp post.

Question 3.
What are the unit of measurements of very small length?
Answer:

1. Millimetre
2. centimetre.

Question 4.
What is meant by parallax?
Answer:
Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight.

Question 5.
What are the clock used by ancient people to measure day time?
Answer:

1. sand clock
2. sun clock.

Question 6.
Where are the electronic balances used?
Answer:
Electronic balances are used in grocery shops and jeweleries.

Question 7.
What is odometer?
Answer:
It is a device used for indicating distance travelled by automobile.

You can Download Samacheer Kalvi 6th Maths Book Solutions Guide Pdf, Tamilnadu State Board help you to revise the complete Syllabus and score more marks in your examinations.

Tamilnadu Samacheer Kalvi 6th Maths Solutions Term 1 Chapter 5 Statistics Ex 5.1

Question 1.
Fill in the blanks.
(i) The collected information is called _____
(ii) An example of Primary data is ______
(iii) An example of a Secondary data is ______
(iv) The tally marks for number 8 in standard form is _____
Solution:
(i) Data
(ii) List of Absentees in a class
(iii) Cricket scores gathered from a website
(iv)

Question 2.
Viji threw a die 30 times and noted down the result each time as follows. Prepare a table on the numbers shown using Tally Marks.

Solution:
We prepare a table using tally marks from the given information

Question 3.
The following list tells colours liked by 25 students. Prepare a table using Tally Marks.

Solution:
We prepare the table using Tally marks as

Question 4.
The following are the marks obtained by 30 students in a class test out of 20 in Mathematics subject.

Prepare a table using Tally Marks.
Solution:
We prepare a table using Tally Marks as

Question 5.
The table shows the number of calls recorded by a Fire Service Station in one year.

Complete the table and answer the following questions.
(i) Which type of call was recorded the most?
(ii) Which type of call was recorded the least?
(iii) How many calls were recorded in all?
(iv) How many calls were recorded as False Alarm?
Solution:
The completed table is given below.

(i) The call for “Other Fires” was recorded the most
(ii) The call for “Rescues” was recorded the least
(iii) The total of 35 calls was recorded
(iv) There are 7 calls were recorded as False alarm.

Objective Type Questions

Question 6.
The tally marks for the number 7 in standard form is ________
(a) 7
(b)
(c) ✓✓✓✓✓✓✓
(d)
Solution:
(b)

Question 7.
The tally marks represent the number count
(a) 5
(b) 8
(c) 9
(d) 10
Solution:
(c) 9

Question 8.
The plural form of ‘datum’ is
(a) datum
(b) datums
(c) data
(d) datas
Solution:
(c) data

You can Download Samacheer Kalvi 6th Maths Book Solutions Guide Pdf, Tamilnadu State Board help you to revise the complete Syllabus and score more marks in your examinations.

Tamilnadu Samacheer Kalvi 6th Maths Solutions Term 1 Chapter 1 Numbers Ex 1.6

Miscellaneous Practice Problems

Question 1.
Try to open my locked suitcase which has the biggest 5 digits odd number as the password comprising the digits 7, 5, 4, 3 and 8. Find the password.
Solution:
Using a place value chart
The number should be the biggest odd

The password is 87543

Question 2.
As per the census of 2001, the population of four states are given below. Arrange the states in ascending and descending order of their population.

Solution:
All the four values have 8 digits
Comparing the leftmost digits we have 91276115, 72626809, 72147030, 68548437
Descending order: 91276115 > 72626809 > 72147030 > 68548437
Ascending order: 68548437 < 72147030 < 72626809 < 91276115
Ascending order: Rajasthan < Tamil Nadu < Madhy Pradesh < West Bengal
Descending order: West Bengal > Madhya Pradesh > TamilNadu > Rajasthan

Question 3.
Study the following table and answer the questions.

(i) How many tigers were there in 2011?
(ii) How many tigers were less in 2008 than in 1990?
(iii) Did the number of tigers increase or decrease between 2011 and 2014? If yes, by how much?
Solution:
(i) There are 1706 tigers in 2011

(ii) No. of tigers in 2008 = 1400
No. of tigers in 1990 = 3500
There were 2100 lesser tigers

(iii) No. of tigers in 2014 = 2226
No. of tigers in 2011 = 1706
Difference = 520
2226 > 1706
The number of tigers increased from 2011 to 2014.
Yes, the number of tigers increased, 520 more tigers are there in 2014.

Question 4.
Mullaikodi has 25 bags of apples. In each bag there are 9 apples. She shares them equally amongst her 6 friends. How many apples do each get? Are there any apples left over?
Solution:
No of apple bags = 25
Apples in each bag = 9
Total no of apples = 25 × 9 = 225
Apples shared among her 6 friends = 225 ÷ 6
So, among her 6 friends, each of them get 37 apples and 3 apples are left over.

Question 5.
A Poultry has produced 15472 eggs and fits 30 eggs in a tray. How many trays do they need?
Solution:
Total eggs = 15472
No. of eggs in 1 tray = 30
No. of trays needed = 15472 ÷ 30 = 516
No. of trays needed = 516 [515 + 1 for remaining 22 eggs]

Challenging Problems (Text book Page No.36 & 37)

Question 6.
Read the table and answer the following questions.

Solution:
(i) Write the Canopus star’s diameter in words in the Indian and the International System.
(ii) Write the sum of the place values of 5 in Sirius star’s diameter in Indian System.
(iii) Eight hundred sixty-four million seven hundred thirty. Write in Indian System
(iv) Write the diameter in words of Arcturus star in the International System.
(v) Write the difference of the diameters of Canopus and Arcturus star in the Indian and the International Systems.
Solution:
(i) Canopus star’s diameter is 25941900 miles
Indian System: Two crores Fifty-Nine Lakh Forty-one thousand Nine Hundred
International System: Twenty-Five Million Nine Hundred Forty-One Thousand Nine Hundred.

(ii) Sirus star’s diameter = 1556500 miles
Sum of place values of 5 is 5 × 100000 + 5 × 10000 + 5 × 100
= 500000 + 50000 + 500
= 5,50,500

(iii) Given value is 864,000,730
In Indian System 86,40,00,730
Eighty-six crore forty lakhs seven hundred and thirty.

(iv) The diameter of the Arcturus Star is 19,888,800 miles
Nineteen Million Eight Hundred and Eighty-Eight Thousand Eight Hundred.

(v) The diameter of Canopus = 25941900
Diameter of Arcturus = 19888800
Difference = 6053100
In Indian System 60,53,100
Sixty lakh fifty-three thousand one hundred.
In International System 6,053,100
Six Million fifty-three thousand one hundred.

Question 7.
Anbu asks Arivu Selvi to guess a five digit odd number. He gives the following hints.
i. The digit in the 1000s place is less than 5
ii. The digit in the 100s place is greater than 6
iii. The digit in the 10s place is 8
What is Arivu Selvi answer? Does she give more than one answer?
Solution:
63785, 53781

Question 8.
A Music concert is taking place in a stadium, A total of 7,689 chairs are to be put in rows of 90.
(i) How many rows will there be?
(ii) Will there be any chairs left over?
Solution:
(i) There will be 85 rows
(ii) Yes, there are 39 chairs left over.

Question 9.
Round off the seven-digit number 29,75,842 to the nearest lakhs and ten lakhs. Are they the same?
Solution:

To the nearest lakhs = 30,00,000
To the nearest ten lakhs = 30,00,000
Yes, they are the same.

Question 10.
Find the 5 or 6 or 7 digit numbers from a newspaper or a magazine to get a rounded number to the nearest ten thousand.
Solution:
(i) 14276 \(\simeq\) 10000
(ii) 1,86945 \(\simeq\) 1,90000