Atmosphere MCQs | Earth’s Atmosphere Quiz Multiple Choice Questions

Physics | Chemistry | Science | Geography

Atmosphere (or Air) related Multiple Choice Questions (MCQs). Earth’s atmosphere and the 5 layers of the Earth’s atmosphere quiz.

Page: 1 | 2 | 3 | 4

1. The 99% of the Earth’s atmosphere consists of
(A) Oxygen
(B) Nitrogen
(C) Oxygen and Nitrogen
(D) Nitrogen and Water

2. By volume, Earth’s atmosphere (or air) contains about _____% of Nitrogen and _____% of Oxygen.
(A) 78,   21
(B) 21,   78
(C) 70,   25
(D) 25,   70

3. The lowest layer of Earth’s atmosphere (the closest to the surface of the Earth) is
(A) thermosphere
(B) troposphere
(C) stratosphere
(D) mesosphere

4. The troposphere extends from the surface of the Earth up to 17 kilometre (different height at different location). The average height of the troposphere is _____ kilometre.
(A) 6
(B) 9
(C) 12
(D) 15

5. The “Ozone Layer” lies within the
(A) thermosphere
(B) troposphere
(C) mesosphere
(D) stratosphere

ANSWERS: ATMOSPHERE MCQS
1. (C) Oxygen and Nitrogen
2. (A) 78,   21
3. (B) troposphere
4. (C) 12
5. (D) stratosphere