World Geography - Comprehensive Mock Test 5

Question 41 Medium

The greatest concentration of ozone is found at ______ km?

A) 10 B) 20 C) 30 D) None of these

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Question 42 Medium

A layer located in stratorphere which absorbs ultraviolet rays of sun called _______?

A) Ozone layer B) F-layer C) D-layer D) E-layer

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Question 43 Medium

Without _______ there would be no clouds or rainfall?

A) Water Vapour B) CO C) CO2 D) O3

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Question 44 Medium

___ absorbs energy which is transferred to the atmosphere from the earth's surface and maintains temperature for life?

A) CO2 B) O2 C) N2O D) O3

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Question 45 Medium

The part of atmosphere which is consisted on variable gasses with unknown composition is called _______?

A) Stratosphere B) Hetrosphere C) Homosphere D) None of these

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Question 46 Easy

Oxygen is ______ % in the air?

A) 18 B) 19 C) 20 D) 21

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Question 47 Easy

Nitrogen is ______ % in the air?

A) 58 B) 68 C) 78 D) 88

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Question 48 Medium

The part of atmosphere which contains constant gasses with known composition called?

A) Homosphere B) Thermosphere C) Hetrosphere D) None of these

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Question 49 Easy

Total height of atmosphere is _______ km?

A) 30,000 B) 40,000 C) 50,000 D) 60,000

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Question 50 Easy

The total height of homosphere is ______ km?

A) 60-100 B) 70-100 C) 8--100 D) 90-100

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