Air Around Us Class 6 NCERT

Major part of the air is constituted by ?

• Nitrogen

• Oxygen

• Carbon dioxide

• Inert gases

Answer explanation

Nitrogen

What is air ?

• A mixture

• A pure substance

• An element

• Anything , that depends on the place where it is found

Envelope of air that surrounds the earth is known as .

• Biosphere

• Atmosphere

• Environment

• Ecosystem

Which is not a property of air ?

• It occupies space

• It is transparent

• It is a solution

• It is a compound

Contains few gases and fire dust particles .

• Wind

• Vapour

• Atmosphere

• Smoke

Mountaineers carry cylinders with them .

• Carbon Dioxide

• Nitrogen

• Water

• Oxygen

What is the percentage of nitrogen and oxygen in air ?

• 98 %

• 99 %

• 97 %

• 100 %

When we heat water , we find bubbles coming from it . This shows that -:

• Water contains air

• Air contains water

• Water itself converts into bubbles

• Water contains dissolved minerals

___________ gas is necessary for burning

• Oxygen

• Nitrogen

• Carbon dioxide

__________ gas occupies the major part of composition of air.

• Nitrogen

• Oxygen

• Carbon dioxide