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Structure of the Atmosphere

66 MCQ questions with answers and explanations · page 1 of 3

Test yourself▶ 25 question test▶ 50 question test

Q1. What percentage of the Earth's atmosphere is found up to a height of 29 km?

  1. A0.29
  2. B0.57
  3. C0.76
  4. D0.97
Show answer & explanation

Answer: D) 0.97

Q2. Which of the following statements is false?

  1. AThe upper limit of the atmosphere is about 10,000 km high.
  2. B50 percent of the atmosphere is confined to a height of 5.6 km.
  3. CThe amount of water vapor increases with increase in altitude
  4. DThe lower layers of the atmosphere are dominated by heavier gases and the upper layers by lighter gases.
Show answer & explanation

Answer: C) The amount of water vapor increases with increase in altitude

Q3. The most stable element of the atmosphere is-

  1. Anitrogen
  2. Boxygen
  3. CCO2
  4. Dwater vapor
Show answer & explanation

Answer: D) water vapor

Q4. Which gas is found in maximum quantity in the atmosphere?

  1. Aoxygen
  2. Bhydrogen
  3. Cnitrogen
  4. Dcarbon dioxide
Show answer & explanation

Answer: C) nitrogen

Q5. Which is the inert gas present in the largest quantity in the atmosphere?

  1. AOrgan
  2. Bkrypton
  3. Chelium
  4. DNeon
Show answer & explanation

Answer: A) Organ

Q6. The atmosphere is mainly heated by?

  1. Afrom direct sunlight
  2. Bby radiation from the Earth
  3. Cfrom the heat inside the Earth
  4. Dfrom the friction of the Earth's motion
Show answer & explanation

Answer: B) by radiation from the Earth

Q7. Which of the following indicates the increasing amount of gases in the atmosphere?

  1. AOzone, carbon dioxide, oxygen, nitrogen
  2. BNitrogen, oxygen, carbon dioxide, ozone,
  3. CCarbon dioxide, ozone, oxygen, nitrogen
  4. DArgon, nitrogen, oxygen, carbon dioxide
Show answer & explanation

Answer: A) Ozone, carbon dioxide, oxygen, nitrogen

Q8. Which of the following gases is responsible for the greenhouse effect?

  1. Achlorine
  2. BCO2
  3. Coxygen
  4. Dhydrogen
Show answer & explanation

Answer: B) CO2

Q9. Which gas in the atmosphere protects us from being burnt by the intense rays of the sun?

  1. Aoxygen
  2. Bnitrogen
  3. Cozone
  4. DOrgan
Show answer & explanation

Answer: C) ozone

Q10. What is the correct descending order of the following gases found in the Earth's atmosphere? 1. Nitrogen 2. Carbon dioxide 3. Oxygen 4. Argon 5. Neon

  1. A1,3,2,4,5
  2. B1,3,2,5,4
  3. C1,3,4,2,5
  4. D1,2,3,5,4
Show answer & explanation

Answer: C) 1,3,4,2,5

Q11. What is the process called in which the temperature of the earth's atmosphere increases due to the absorption of infrared radiation reflected from the earth's surface?

  1. ATsunami
  2. Bsolar heating
  3. Cgreenhouse effect
  4. Dseismic effect
Show answer & explanation

Answer: C) greenhouse effect

Q12. What is the percentage of nitrogen in the air?

  1. A0.94
  2. B0.03
  3. C78.03
  4. D85.02
Show answer & explanation

Answer: C) 78.03

Q13. Choose the correct answer that shows the order of layers of the atmosphere?

  1. AIonosphere, Voltosphere, Mesosphere, Stratosphere, Transformation
  2. BTransformation, Stratosphere, Mesosphere, Ionosphere, Volumetric,
  3. CVolosphere, Transformation, Ionosphere, Mesosphere, Stratosphere,
  4. DMesosphere, Ionosphere, Stratosphere, Transformation, Ionosphere,
Show answer & explanation

Answer: B) Transformation, Stratosphere, Mesosphere, Ionosphere, Volumetric,

Q14. What is the main basis for dividing the atmosphere into layers like troposphere, stratosphere etc.?

  1. Atemperature
  2. BAir pressure
  3. COrganization
  4. Ddestiny
Show answer & explanation

Answer: A) temperature

Q15. What is the approximate height of the troposphere above the ground?

  1. A8 km.
  2. B14 km.
  3. C18 km.
  4. D22 km.
Show answer & explanation

Answer: B) 14 km.

Q16. Which of the following zones is also called the convective zone?

  1. ATroposphere
  2. BStratosphere
  3. CIonosphere
  4. DMadhyamandal
Show answer & explanation

Answer: A) Troposphere

Q17. In which season does the height of the troposphere increase?

  1. AWinter season
  2. BSummer season
  3. CRainy season
  4. DNone of these
Show answer & explanation

Answer: B) Summer season

Q18. What is the approximate maximum height of the troposphere above the ground?

  1. A6 km.
  2. B8 km.
  3. C12 km.
  4. D18 km.
Show answer & explanation

Answer: D) 18 km.

Q19. 1 of the general decrease in the troposphere0C Each -

  1. A146 m. for the purpose
  2. B156 m. for the purpose
  3. Cfor 166 m
  4. Dfor 176 m
Show answer & explanation

Answer: C) for 166 m

Q20. The troposphere is the hottest layer of the atmosphere because-

  1. AIt is closest to the Sun
  2. BIt has a charged particle
  3. CIt is heated by the Earth's surface
  4. DIt produces heat
Show answer & explanation

Answer: C) It is heated by the Earth's surface

Q21. What is the transition region between the troposphere and the stratosphere called?

  1. Aisothermal boundary
  2. Btropopause
  3. Cmiddle range
  4. Douter limit
Show answer & explanation

Answer: B) tropopause

Q22. Where is the Earth's atmosphere most dense?

  1. ATroposphere
  2. BStratosphere
  3. CMadhyamandal
  4. DIonosphere
Show answer & explanation

Answer: A) Troposphere

Q23. Where do all the important atmospheric processes that change various climate and weather conditions occur?

  1. Astratosphere
  2. BExosphere
  3. CIonosphere
  4. DTroposphere
Show answer & explanation

Answer: D) Troposphere

Q24. The troposphere is the lower layer of the atmosphere whose height at the equator is-

  1. Aup to 10 miles
  2. Bup to 9 miles
  3. Cup to 6 miles
  4. Dup to 4 miles
Show answer & explanation

Answer: A) up to 10 miles

Q25. In which layer of the atmosphere does thunder occur?

  1. AIonosphere
  2. Bozone layer
  3. CTroposphere
  4. DStratosphere
Show answer & explanation

Answer: C) Troposphere

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