Composition of Air

Nitrogen is a gas found in air. What percentage of the air is made up of nitrogen?

• 78 %

• 21%

• 0.04%

• 0.06%

Air is made up of a number of gases. Name the gas found in air that is useful for the process of respiration.

• nitrogen

• oxygen

• water vapor

• carbon dioxide

Which show gases in atmosphere from MOST abundant to least?

• Oxygen, Nitrogen, water vapor, CO_2,

• nitrogen, oxygen, water vapor, CO₂

• CO₂, Oxygen, Nitrogen, water vapor

• water vapor, CO_2,, Oxygen, Nitrogen

Air consist of different gases like

• Oxygen

• Carbon dioxide

• Nitrogen

• Hydrogen

• Inert gases

The largest amount of gas in the air

• Nitrogen

• Oxygen

• Hydrogen

• Carbon dioxide

How many percent of oxygen in the air

• 20%

• 21%

• 78%

• 50%

Percentage of nitrogen in the air

• 21%

• 78%

• 84%

• 50%

__________________ is the most important gas in the composition of air.

• Nitrogen

• Argon

• Oxygen

Name a gas which becomes a pollutant if its amount increases in the air

• Nitrogen

• Carbon dioxide

• Oxygen

What is the most abundant gas in the Earth's atmosphere?

• Nitrogen

• Oxygen

• Carbon Dioxide

• Argon