MEDIUM
6th CBSE
IMPORTANT
Earn 100

How do plants and animals maintain the balance of oxygen and carbon dioxide gases in air (or atmosphere)?

Important Questions on Air Around Us

HARD
6th CBSE
IMPORTANT
How will you show that:
(i) air is present in a lump of soil?
(ii) air is dissolved in water?
MEDIUM
6th CBSE
IMPORTANT
What is the atmosphere? Why is the atmosphere essential for life on earth? Why do mountaineers carry oxygen cylinders with them while climbing high mountains?
MEDIUM
6th CBSE
IMPORTANT
What is the atmosphere? Why is the atmosphere essential for life on earth? Why do mountaineers carry oxygen cylinders with them while climbing high mountains?
MEDIUM
6th CBSE
IMPORTANT

The two gases which, taken together, make up about 99 percent of air are: 

A. Nitrogen             B. Carbon dioxide             C. Ozone                D. Oxygen

MEDIUM
6th CBSE
IMPORTANT
The earthworms come out of the soil only during:
MEDIUM
6th CBSE
IMPORTANT
Humans do not depend on plants for one of the following. This one is
HARD
6th CBSE
IMPORTANT
How can we find out that there is air in a sponge?
MEDIUM
6th CBSE
IMPORTANT

How can we release some of the air from the glass shown in the following diagram?

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