Geography MCQs for Class 11 with Answers Chapter 8 Composition and Structure of Atmosphere

Here you will find NCERT MCQ Questions for Class 11 Geography with Answers PDF Free Download based on the important concepts and topics given in the textbook as per CBSE new exam pattern. This may assist you to understand and check your knowledge about the chapters. Students also can take a free test of the Multiple Choice Questions of Class 11 Geography. Each question has four options followed by the right answer. These MCQ Questions are selected supported by the newest exam pattern as announced by CBSE.


Q.1 What is the % of nitrogen in the atmosphere?

(a) 20.95%
(b) 78.08%
(c) 20%
(d) 80%

(b) 78.08%


Q.2 Which gas is present in large amount in the atmosphere?

(a) oxygen
(b) hydrogen
(c) nitrogen
(d) carbon dioxide

(c) nitrogen


Q.3 Name the gas which is useful for plants

(a) oxygen
(b) carbon dioxide
(c) argon
(d) hydrogen

(b) carbon dioxide


Q.4 Which gas is found as a trace in the atmosphere?

(a) oxygen
(b) nitrogen
(c) carbon dioxide
(d) xenon

(d) xenon


Q.5 Which zone separates the troposphere from the stratosphere?

(a) Mesospause
(b) Tropopause
(c) Ionospause
(d) Stratopause

(b) Tropopause


Q.6 The increase in the volume of carbon dioxide for the past few decades is mainly due to

(a) deforestation
(b) climate change
(c) atmospheric composition
(d) burning of fossil fuels

(d) burning of fossil fuels


Q.7 What envelopes the earth all round?

(a) Hydrosphere
(b) Lithosphere
(c) Atmosphere
(d) Biosphere

(c) Atmosphere


Q.8 The radiations that heat earth’s atmosphere, comes from the

(a) Sun
(b) Earth
(c) Ionosphere
(d) Sun and Earth

(b) Earth


Q.9 What percentage of carbon dioxide is found in air?

(a) 0.036%
(b) 0.93%
(c) 0.002%
(d) 0.3%

(a) 0.036%


Q.10 What percentage of oxygen is found in the air?

(a) 20.95
(b) 21.95
(c) 78.08
(d) 80.08

(a) 20.95


Q.11 Which gas acts as a filter and protects us from the ultra violet rays?

(a) oxygen
(b) nitrogen
(c) ozone
(d) carbon dioxide

(c) ozone


Q.12 Which of the following gases absorbs ultraviolet rays?

(a) Carbon Dioxide
(b) Neon
(c) Ozone
(d) Nitrogen

(c) ozone


Q.13 Excess carbon dioxide in the atmosphere due to pollution will cause

(a) Earth’s temperature to rise
(b) Earth’s temperature to fall
(c) Decrease in weather phenomenon
(d) Ozone layer to become thicker

(a) Earth’s temperature to rise


Q.14 Which layer of the atmosphere is useful for various biological activities?

(a) stratosphere
(b) troposphere
(c) ionosphere
(d) none of these

(b) troposphere


Q.15 Which one is the variable gas in the atmosphere?

(a) carbon dioxide
(b) water vapour
(c) dust particles
(d) smoke

(b) water vapour


Q.16 Which layer of the atmosphere is free from water vapours and clouds?

(a) troposphere
(b) stratosphere
(c) mesosphere
(d) exosphere

(b) stratosphere


Q.17 The zone separating troposphere from stratosphere is known as

(a) tropopause
(b) stratopause
(c) mesopause
(d) none of these

(a) tropopause


Q.18 Upto what height does the stratosphere extend?

(a) 60 km.
(b) 80 km.
(c) 50 km.
(d) 120 km.

(c) 50 km.


Q.19 The mesosphere lies above the

(a) troposphere
(b) stratosphere
(c) ionosphere
(d) exosphere

(b) stratosphere


Q.20 Which gas is opaque to the outgoing terrestrial radiation?

(a) Dust Particles
(b) Ozone
(c) Carbon dioxide
(d) Water Vapour

(c) Carbon dioxide


Q.21 Chief elements of the atmosphere are

(a) wind
(b) temperature
(c) pressure
(d) all of them

(d) all of them


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Practicing NCERT Geography MCQs With Answers Pdf Class 11 is one of the best ways to prepare for the CBSE Class 11 board exam. There is no substitute for consistent practice whether one wants to understand a concept thoroughly or one wants to score better. If you have any queries regarding The CBSE Class 11 Geography MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.

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