EASY
Earn 100

Air is a ____.

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Important Questions on Air Around Us

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Science>Chemistry>Air Around Us>Presence of Air Around Us
 What is the use of the ozone layer?
HARD
Science>Chemistry>Air Around Us>Presence of Air Around Us
How will you show that an empty glass bottle is filled with air?
EASY
Science>Chemistry>Air Around Us>Presence of Air Around Us

Study the picture and answer the question:

Question Image

Figure A

What is Figure A? What is it used for?

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Science>Chemistry>Air Around Us>Presence of Air Around Us
What is the layer of air around the Earth called?
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Science>Chemistry>Air Around Us>Presence of Air Around Us
State any five uses of air?
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Science>Chemistry>Air Around Us>Presence of Air Around Us
Explain why, when an empty glass bottle is inserted into a bucket of water vertically, water does not enter the bottle.
EASY
Science>Chemistry>Air Around Us>Presence of Air Around Us
_____ gets thinner with increase in altitude.
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Science>Chemistry>Air Around Us>Presence of Air Around Us
Write a note on the different layers of the atmosphere.
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Science>Chemistry>Air Around Us>Presence of Air Around Us
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?
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Science>Chemistry>Air Around Us>Presence of Air Around Us
 The atmosphere gets denser the higher you go.
MEDIUM
Science>Chemistry>Air Around Us>Presence of Air Around Us
What is air? State the composition of air. Write any two properties of air?
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Science>Chemistry>Air Around Us>Presence of Air Around Us
What substance is present in a bottle which appear to be empty? Explain why, Earthworms come out of the soil only during heavy rains?
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Science>Chemistry>Air Around Us>Presence of Air Around Us
What name is given to the layer of air which surrounds the Earth?
MEDIUM
Science>Chemistry>Air Around Us>Presence of Air Around Us
Why do mountaineers and divers carry oxygen cylinders with them?
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Science>Chemistry>Air Around Us>Presence of Air Around Us
The gas responsible for stopping ultraviolet rays is _____.
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Science>Chemistry>Air Around Us>Presence of Air Around Us
Why does a lump of cotton wool shrink in water?
EASY
Science>Chemistry>Air Around Us>Presence of Air Around Us

Choose the right word and fill in the blank:

In a _____ (gale/breeze) the air moves gently. 

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Science>Chemistry>Air Around Us>Presence of Air Around Us
How is the atmosphere important to the Earth?
HARD
Science>Chemistry>Air Around Us>Presence of Air Around Us

Describe how you will show the following.

There is air in water.

MEDIUM
Science>Chemistry>Air Around Us>Presence of Air Around Us
What is wind? State three uses of windmills.