class 5 and 6 air around us

what is air?

• solid

• liquid

• both solid and gas

• gas

what are the components of Air?

• carbon dioxide

• oxygen

• nitrogen

• all of the above

how much percentage of oxygen is present in Air?

• 78%

• 21%

• 22%

• 1%

How much percentage of Nitrogen is present in Air?

• 2%

• 77%

• 78%

• 0%

Which property of Air shown in the image?

• Air exerts pressure

• Air is needed for burning

• Air has weight

• Air has mass

Air is invisible

• A. TRUE

• B. FALSE

• C. BOTH

how many layers of atmosphere are there?

• infinity ie cannot be counted

• 1

• 8

• 5

what is a air pollution?

• air pollution is polluting the land

• air pollution is when air is not clean

• clean air

• odourful air

Air pressure ___________ as altitude ___________.

• stays the same, decreases

• stays the same, increases

• decreases, increases

• increases, decreases

Earth is surrounded by a layer of gases called the ____________.

• Atmosphere

• Sun Shield

• Athletics

• Earthmosphere