Class 10 Chemistry MCQs - Chapter 6

Environmental Chemistry I Atmosphere Quiz Questions and Answers PDF - 11

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Environmental Chemistry I Atmosphere Questions & Answers PDF Download: MCQ Quiz 11

MCQ 51: Which of the following makes up most of the air?

A) nitrogen

B) oxygen

C) carbon dioxide

D) helium

MCQ 52: Which of the following is true about nitric oxide?

A) it is colorless

B) it has an irritating odor

C) it is not toxic

D) it is not harmful

MCQ 53: Presence of which of the following can be felt near the photocopier, television set, microwave oven, etc.?

A) chlorofluorocarbons (chlorofluorocarbons (CFCs))

B) methane

C) ozone

D) lead compounds

MCQ 54: The extension of troposphere above the Earth's surface is

A) 12 km

B) 50 km

C) 80 km

D) 70 km

MCQ 55: The energy of sunlight is converted into heat by

A) oxygen only

B) nitrogen only

C) hydrogen

D) oxygen and nitrogen

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