Home / Unit-11 Environmental Chemistry Air / Question
MCQ
Which gas is the most abundant component of dry air?
Unit-11 Environmental Chemistry Air
A Nitrogen
B Oxygen
C Carbon dioxide
D Argon
Explanation

Nitrogen makes up about 78% of dry air, the highest proportion of any gas.

Related MCQs

Burning of forests increases the concentration of which gas in the atmosphere?
Unit-11 Environmental Chemistry Air View
Which layer of the atmosphere contains clouds, dust, and most of the water vapor?
Unit-11 Environmental Chemistry Air View
Which gas traps heat escaping from the Earth and prevents it from going into space?
Unit-11 Environmental Chemistry Air View
What is the approximate percentage of carbon dioxide in the atmosphere?
Unit-11 Environmental Chemistry Air View
Decomposition of dead plants and animals releases which gas into the air?
Unit-11 Environmental Chemistry Air View
Which two gases together make up about 99% of dry air?
Unit-11 Environmental Chemistry Air View