EASY
Earn 100

 gas is used in making light bulbs and fluorescent tubes. 

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Important Questions on Natural Resources-Air,Water and Land

MEDIUM
Science>Chemistry>Natural Resources-Air,Water and Land>Air
 What is the use of the ozone layer?
HARD
Science>Chemistry>Natural Resources-Air,Water and Land>Air
How will you show that an empty glass bottle is filled with air?
EASY
Science>Chemistry>Natural Resources-Air,Water and Land>Air

Study the picture and answer the question:

Question Image

Figure A

What is Figure A? What is it used for?

EASY
Science>Chemistry>Natural Resources-Air,Water and Land>Air
What is the layer of air around the Earth called?
MEDIUM
Science>Chemistry>Natural Resources-Air,Water and Land>Air
What is air? State the composition of air. Write any two properties of air?
MEDIUM
Science>Chemistry>Natural Resources-Air,Water and Land>Air
Explain why, when an empty glass bottle is inserted into a bucket of water vertically, water does not enter the bottle.
EASY
Science>Chemistry>Natural Resources-Air,Water and Land>Air
_____ gets thinner with increase in altitude.
MEDIUM
Science>Chemistry>Natural Resources-Air,Water and Land>Air
Write a note on the different layers of the atmosphere.
MEDIUM
Science>Chemistry>Natural Resources-Air,Water and Land>Air
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?
EASY
Science>Chemistry>Natural Resources-Air,Water and Land>Air
 The atmosphere gets denser the higher you go.
MEDIUM
Science>Chemistry>Natural Resources-Air,Water and Land>Air
What is wind? State three uses of windmills.
MEDIUM
Science>Chemistry>Natural Resources-Air,Water and Land>Air
State any five uses of air?
EASY
Science>Chemistry>Natural Resources-Air,Water and Land>Air
What name is given to the layer of air which surrounds the Earth?
MEDIUM
Science>Chemistry>Natural Resources-Air,Water and Land>Air
Why do mountaineers and divers carry oxygen cylinders with them?
EASY
Science>Chemistry>Natural Resources-Air,Water and Land>Air
The gas responsible for stopping ultraviolet rays is _____.
MEDIUM
Science>Chemistry>Natural Resources-Air,Water and Land>Air
Why does a lump of cotton wool shrink in water?
EASY
Science>Chemistry>Natural Resources-Air,Water and Land>Air

Choose the right word and fill in the blank:

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

MEDIUM
Science>Chemistry>Natural Resources-Air,Water and Land>Air
How is the atmosphere important to the Earth?
HARD
Science>Chemistry>Natural Resources-Air,Water and Land>Air

Describe how you will show the following.

There is air in water.

MEDIUM
Science>Chemistry>Natural Resources-Air,Water and Land>Air
What substance is present in a bottle which appear to be empty? Explain why, Earthworms come out of the soil only during heavy rains?