MEDIUM
6th CBSE
IMPORTANT
Earn 100

Give reasons, water vapour are not found in the layers above troposphere.

Important Questions on Air

EASY
6th CBSE
IMPORTANT

Give reasons, on a rainy day, you see earthworms coming out.

MEDIUM
6th CBSE
IMPORTANT
Nitrogen makes 78 % of air but cannot be used by organisms. How is it made available to the organisms?
MEDIUM
6th CBSE
IMPORTANT
Draw and describe oxygen cycle.
MEDIUM
6th CBSE
IMPORTANT
Briefly mention composition of air.
MEDIUM
6th CBSE
IMPORTANT
List major uses of air. Which musical instruments are played with the help of air?
HARD
6th CBSE
IMPORTANT
Which gas is used in a fire extinguisher? What will happen if it is replaced with oxygen?
MEDIUM
6th CBSE
IMPORTANT
Some wet iron wool was placed in a test tube. The test tube was inverted and kept in a beaker of water. After a week it was noticed that the level of air column has reduced. Why did this happen?