MCQ Question for Class 11 Geography Chapter 8 Composition and Structure of Atmosphere with Answer
Q.1 What is the % of nitrogen in the atmosphere?
(b) 78.08%
Q.2 Which gas is present in large amount in the atmosphere?
(c) nitrogen
Q.3 Name the gas which is useful for plants
(b) carbon dioxide
Q.4 Which gas is found as a trace in the atmosphere?
(d) xenon
Q.5 Which zone separates the troposphere from the stratosphere?
(b) Tropopause
Q.6 The increase in the volume of carbon dioxide for the past few decades is mainly due to
(d) burning of fossil fuels
Q.7 What envelopes the earth all round?
(c) Atmosphere
Q.8 The radiations that heat earth’s atmosphere, comes from the
(b) Earth
Q.9 What percentage of carbon dioxide is found in air?
(a) 0.036%
Q.10 What percentage of oxygen is found in the air?
(a) 20.95
Q.11 Which gas acts as a filter and protects us from the ultra violet rays?
(c) ozone
Q.12 Which of the following gases absorbs ultraviolet rays?
(c) ozone
Q.13 Excess carbon dioxide in the atmosphere due to pollution will cause
(a) Earth’s temperature to rise
Q.14 Which layer of the atmosphere is useful for various biological activities?
(b) troposphere
Q.15 Which one is the variable gas in the atmosphere?
(b) water vapour
Q.16 Which layer of the atmosphere is free from water vapours and clouds?
(b) stratosphere
Q.17 The zone separating troposphere from stratosphere is known as
(a) tropopause
Q.18 Upto what height does the stratosphere extend?
(c) 50 km.
Q.19 The mesosphere lies above the
(b) stratosphere
Q.20 Which gas is opaque to the outgoing terrestrial radiation?
(c) Carbon dioxide
Q.21 Chief elements of the atmosphere are
(d) all of them
