MCQ Questions for Class 11 Geography: Ch 8 Composition and Structure of Atmosphere

MCQ Questions for Class 11 Geography: Ch 8 Composition and Structure of Atmosphere

1. 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.

2. What envelopes the earth all round?
(a) Hydrosphere
(b) Lithosphere
(c) Atmosphere
(d) Biosphere
► (c) Atmosphere

3. Which gas is opaque to the outgoing terrestrial radiation?
(a) Dust Particles
(b) Ozone
(c) Carbon dioxide
(d) Water Vapour
► (c) Carbon dioxide

4. The uppermost layer of the atmosphere is
(a) Mesosphere.
(b) Exosphere.
(c) Ionosphere.
(d) Stratosphere.
► (b) exosphere.

5. 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.

6. Which zone separate the tropsophere from stratosphere?
(a) Mesospause.
(b) Tropopause
(c) Ionospause.
(d) Stratopause.
► (b) Tropopause

7. Earth absorbs more
(a) Humidity.
(b) Heat.
(c) Gases.
(d) Water Vapour.
► (b) Heat.

8. Which sphere lies above the stratosphere?
(a) Mesosphere.
(b) Exosphere.
(c) Ionosphere.
(d) None of the abov.
► (a) Mesosphere.

9. Which of the following gases absorbs ultra violet rays?
(a) Carbon Dioxide
(b) Neon
(c) Ozone
(d) Nitrogen
► (c) Ozone

10. Which one of the following gases constitute the major portion of atmosphere?
(a) Oxygen
(b) Nitrogen
(c) Argon
(d) Carbon dioxide
► (b) Nitrogen

11. It is an element of atmosphere
(a) Tides.
(b) Pressure.
(c) Water currents.
(d) Waves.
► (b) Pressure.

12. The radiations that heat earth’s atmosphere, comes from the
(a) Sun
(b) Earth
(c) Ionosphere
(d) Sun and Earth
► (b) Earth
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