Match the statements in column A with those in column B. Column A Column B 1. A gas present in air and useful in making fertilizers. (a) Oxygen 2. A substance in the presence of which photosynthesis takes place. (b) Atmosphere 3. A gas which helps in burning of fuels. (c) Nitrogen 4. A gas which is useful for plants in making food. (d) Chlorophyll 5. A gaseous cover surrounding the earth. (e) Carbon dioxide

1. A gas present in air and useful in making fertilizers is nitrogen. Air contains 78% of Nitrogen. 2. A substance in the presence of which photosynthesis takes place is chlorophyll. It is green substance present in leaves. 3. A gas, which helps in burning of fuels is oxygen. This type of reaction is known as oxidation reaction. 4. A gas, which is useful for plants in making food is carbon dioxide. Oxygen gas and water are released in this process. 5. A gaseous cover surrounding the earth is called atmosphere. They are divided into five parts. This extends to several kilometres above the earth's surface. Column A Column B 1. A gas present in air and useful in making fertilizers. (c) Nitrogen 2. A substance in the presence of which photosynthesis takes place. (d) Chlorophyll 3. A gas which helps in burning of fuels. (a) Oxygen 4. A gas which is useful for plants in making food. (e) Carbon dioxide 5. A gaseous cover surrounding the earth. (b) Atmosphere

E M B I B E

Learning Elementary SCIENCE A Book of Science & Technology FOR Class 6>Chapter 15 - Air Around Us>EXERCISES>Q II

MEDIUM

6th CBSE

IMPORTANT

Earn 100

The statement given below is incorrect. Write correct statement.

Smoke consists of black particles of soil, suspended in air.

Important Questions on Air Around Us

MEDIUM

6th CBSE

IMPORTANT

Learning Elementary SCIENCE A Book of Science & Technology FOR Class 6>Chapter 15 - Air Around Us>EXERCISES>Q II

The statement given below is incorrect. Write correct statement.

Plants are not dependent on animals for the supply of carbon dioxide.

EASY

6th CBSE

IMPORTANT

Learning Elementary SCIENCE A Book of Science & Technology FOR Class 6>Chapter 15 - Air Around Us>EXERCISES>Q II

The statement given below is incorrect. Write correct statement.

Air contains approximately $1 %$ of oxygen by volume.

HARD

6th CBSE

IMPORTANT

Learning Elementary SCIENCE A Book of Science & Technology FOR Class 6>Chapter 15 - Air Around Us>EXERCISES>Q III

Match the statements in column A with those in column B.

Column A	Column B
1. A gas present in air and useful in making fertilizers.	(a) Oxygen
2. A substance in the presence of which photosynthesis takes place.	(b) Atmosphere
3. A gas which helps in burning of fuels.	(c) Nitrogen
4. A gas which is useful for plants in making food.	(d) Chlorophyll
5. A gaseous cover surrounding the earth.	(e) Carbon dioxide