The lowest layer of the atmosphere is

a. mesosphere
b. stratosphere
c. troposphere
d. thermosphere

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Solution

The correct answer is option (c).

Explanation: Troposphere is the lowest layer of the Earth's atmosphere extending to a height of 8 kilometres at the poles and 18 kilometres at the Equator.

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Similar questions

Tick the correct answer.

(i) Which of the following gases protects us from harmful sun rays?

(a) Carbon dioxide

(b) Nitrogen

(ii) The most important layer of the atmosphere is

(a) Troposphere

(b) Thermosphere

(iii) Which of the following layers of the atmosphere is free from clouds?

(a) Troposphere

(b) Stratosphere

(iv) As we go up the layers of the atmosphere, the pressure

(a) Increases

(b) Decreases

(v) When precipitation comes down to the Earth in the liquid form, it is called

(a) Cloud

(b) Rain

LIST - I	LIST - II
A. Prevents UV radiation	1. Mesosphere
B. No propagation of sound waves	2. Thermosphere
C. Maintenance of the heat balance	3. Stratosphere
D. All gases are ionised	4. Troposphere
	5. Lithosphere

Column I	Column II
(A) Troposphere	(i) Prevents UV rays coming to earth
(B) Stratosphere	(ii) Ionization of gases
(C) Mesosphere	(iii) Maintenance of heat balance
(D) Thermosphere	(iv) Non-propagation of sound waves

List-I	List-II
(a) $10 km$ height over earth's surface	(i) Thermosphere
(b) $70 km$ height over earth's surface	(ii) Mesosphere
(c) $180 km$ height over earth's surface	(iii) stratosphere
(d) $270 km$ height over earth's surface	(iv) Troposphere

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