Match the following 1. Housing a. is a branch of science. 2. Food b. destroys harmful insects. 3. Clothing c. increases the yield of crops. 4. Chemistry d. paints and varnishes. 5. Insecticide e. synthetic yarns. 6. Fertiliser f. butter and bread.

The housing includes the use of paints and varnishes. The use of paints and varnishes for decoration is nearly as old as human culture itself. Prehistoric people used coloured earth and clay to make ritual drawings on the walls of caves. Food include butter and bread. They are processed food. Processed foods are convenient though sometimes they may contain a large amount of hidden sodium, fats and sugar. Clothing is done with synthetic yarns. Synthetic yarns or artificial yarns are produced from chemicals in the laboratory. Synthetic yarns are polymers made of various monomer units. Chemistry is a branch of science. It deals with the composition and constitution of substances and the changes that they undergo as a consequence of alterations in the constitution of their molecules. Insecticides destroy harmful insects. They include ovicides and larvicides used against insect eggs and larvae, respectively. Fertilisers increase the yield of crops. They are natural or artificial substances containing chemical elements that improve the growth and productiveness of plants. Fertilisers enhance the fertility of the soil. 1. Housing d. paints and varnishes. 2. Food f. butter and bread. 3. Clothing e. synthetic yarns. 4. Chemistry a. is a branch of science. 5. Insecticide b. destroys harmful insects. 6. Fertiliser c. increases the yield of crops.

E M B I B E

It's All About Science Chemistry for Middle School 6>Chapter 1 - Introduction to Chemistry>EXERCISE>Q D

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6th ICSE

IMPORTANT

Earn 100

Classify the following under insecticide, fungicide, fertiliser and preservative:

Malathion.

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Important Questions on Introduction to Chemistry

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6th ICSE

IMPORTANT

It's All About Science Chemistry for Middle School 6>Chapter 1 - Introduction to Chemistry>EXERCISE>Q D

Sulphur is an example of: (Antacid / Fungicide)

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6th ICSE

IMPORTANT

It's All About Science Chemistry for Middle School 6>Chapter 1 - Introduction to Chemistry>EXERCISE>Q D

Benzoic acid is used as: (Pesticide / Preservative)

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6th ICSE

IMPORTANT

It's All About Science Chemistry for Middle School 6>Chapter 1 - Introduction to Chemistry>EXERCISE>Q D

Classify the following under insecticide, fungicide, fertiliser and preservative:

Urea.

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6th ICSE

IMPORTANT

It's All About Science Chemistry for Middle School 6>Chapter 1 - Introduction to Chemistry>EXERCISE>Q D

Bordeaux mixture. (Insecticide/ Pesticide/ Fungicide)

HARD

6th ICSE

IMPORTANT

It's All About Science Chemistry for Middle School 6>Chapter 1 - Introduction to Chemistry>EXERCISE>Q E

Match the following

1. Housing	a. is a branch of science.
2. Food	b. destroys harmful insects.
3. Clothing	c. increases the yield of crops.
4. Chemistry	d. paints and varnishes.
5. Insecticide	e. synthetic yarns.
6. Fertiliser	f. butter and bread.