Question

Air is a mixture of

• A. Oxygen and nitrogen
• B. Carbon dioxide and oxygen
• C. Various gases, dust particles and water vapour.
• D. Oxygen and dust particles

Answer 1

The correct option is C

Various gases, dust particles and water vapour.

Explanation for correct option:

Option C

• Air is a homogeneous mixture of different gases.
• Air is mainly composed of various gases like nitrogen (78%), oxygen (21%), carbon dioxide(0.03%), and other gases(1%).
• Air also contains water vapours and dust particles.

Therefore, option C is correct.

Explanation for incorrect option:

• Air contains various gases, dust particles and water vapours.
• Therefore, options A, B and D are incorrect and option C is correct.