Air Around Us

Envelope of air that surrounds the earth is known as .

• Biosphere

• Atmosphere

• Environment

• Ecosystem

Major part of the air is constituted by ?

• Nitrogen

• Oxygen

• Carbon dioxide

• Inert gases

What is air ?

• A mixture

• A pure substance

• An element

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

Which is not a property of air ?

• It occupies space

• It is transparent

• It is a solution

• It is a compound

• Air is everywhere . It is present evn in the empty bottle .

• Air does not have any colour and it is transparent .

• Air has weight

• Air occupies space

Mountaineers carry cylinders with them .

• Carbon Dioxide

• Nitrogen

• Water

• Oxygen

Contains few gases and fire dust particles .

• Wind

• Vapour

• Atmosphere

• Smoke

Which is the correct percentages for the make-up of air?

• 78% other gases

  1% Oxygen

  21% Nitrogen

• 1% other gases

  78% Oxygen

  21% Nitrogen

• 21% other gases

  1% Oxygen

  78% Nitrogen

• 1% other gases

  21% Oxygen

  78% Nitrogen

Does point A or B have higher air pressure?

• A

• B

• they have the same

Tags

NGSS.MS-ESS2-5

Air is a ________ of different gases.

• solution

• mixture

• division

• separation