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Structure of the Atmosphere

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

Test yourself▶ 25 question test▶ 50 question test

Q51. Which of the following statements is true?

  1. AThe increase and decrease of air pressure is called "air pressure gradient".
  2. BThe fluctuations in air pressure decrease from the equator towards the poles.
  3. C60 Diurnal fluctuations in air pressure are not observed beyond latitude
  4. Dall of the above
Show answer & explanation

Answer: D) all of the above

Q52. What is the number of pressure belts on the globe?

  1. A5
  2. B6
  3. C7
  4. D9
Show answer & explanation

Answer: C) 7

Q53. Up to how many latitudes does the equatorial low pressure belt extend on both sides of the equator?

  1. A5⁰
  2. B10⁰
  3. C15⁰
  4. D20⁰
Show answer & explanation

Answer: A) 5⁰

Q54. The expansion of the doldrum belt is generally found in-

  1. A0⁰ -5⁰ Answer
  2. B0⁰ -5⁰ South
  3. C0⁰ -10⁰ Answer
  4. D5⁰ North -5⁰ South
Show answer & explanation

Answer: D) 5⁰ North -5⁰ South

Q55. The doldrums region is characterized by

  1. Alow pressure and air subsidence
  2. Blow pressure and gentle easterly wind
  3. Cnormal pressure and depression of air
  4. Dlow pressure and calm winds
Show answer & explanation

Answer: D) low pressure and calm winds

Q56. The calm belt is found on both sides of which line?

  1. AEquator
  2. BTropic of Cancer
  3. CCapricorn
  4. Darctic line
Show answer & explanation

Answer: A) Equator

Q57. All the hot deserts of the world are located in which of the following belts?

  1. Aequatorial low pressure belt
  2. Bsubtropical high pressure belt
  3. Csubpolar low pressure belt
  4. Dpolar high pressure belt
Show answer & explanation

Answer: B) subtropical high pressure belt

Q58. Which layer is found above the troposphere in the atmosphere?

  1. Astratosphere
  2. Bmesosphere
  3. Cthermosphere
  4. Dexosphere
Show answer & explanation

Answer: A) stratosphere

Q59. The ozone layer is at a height above the earth-

  1. A50 km.
  2. B300 km.
  3. C2000 km.
  4. D20 km.
Show answer & explanation

Answer: D) 20 km.

Q60. Where are jet streams usually found?

  1. Ain the ozone layer
  2. Bin the tropopause
  3. Cin the mesosphere
  4. Din the ionosphere
Show answer & explanation

Answer: B) in the tropopause

Q61. The number of atmospheric layers present above the Earth is-

  1. A4
  2. B5
  3. C2
  4. D3
Show answer & explanation

Answer: B) 5

Q62. Consider the following constituent gases of the atmosphere - 1. Argon 2. Neon 3. Helium 4. Carbon dioxide Which of the following is the correct ascending order of the above gases in terms of percentage by volume?

  1. A3-2-4-1
  2. B1-4-2-3
  3. C4-2-3-1
  4. D2-4-1-3
Show answer & explanation

Answer: A) 3-2-4-1

Q63. Which of the following statements is correct regarding temperature?

  1. AThe temperature in the stratosphere decreases with altitude
  2. BThe temperature remains constant at different altitudes in the stratosphere
  3. CTemperature in the troposphere 6.5increases with altitude at an average rate of ⁰C per km
  4. DThe temperature in the troposphere decreases with altitude at an average rate of 6.4°C per km.
Show answer & explanation

Answer: D) The temperature in the troposphere decreases with altitude at an average rate of 6.4°C per km.

Q64. Which of the following statements is not correct regarding the mesosphere?

  1. AMeteorites burn up upon entering this layer from space.
  2. BIn this layer, the temperature increases rapidly with increasing altitude.
  3. CThis is the third layer of the atmosphere.
  4. DIt is directly above the stratosphere
Show answer & explanation

Answer: B) In this layer, the temperature increases rapidly with increasing altitude.

Q65. Which is the lowest layer in the vertical structure of the atmosphere?

  1. Astratosphere
  2. Bmesosphere
  3. Ctroposphere
  4. Dthermosphere
Show answer & explanation

Answer: C) troposphere

Q66. Which of the following layers is the upper limit of our atmosphere, extending from the top of the thermosphere to 1,000 km (6,200 mi)?

  1. Aexosphere
  2. Btropopause
  3. Cmesosphere
  4. Dionosphere
Show answer & explanation

Answer: A) exosphere

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