Solar System MCQs with answers Page - 40

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Q. Mercury's exosphere contains which element responsible for its yellowish glow?

  • (A) Sodium
  • (B) Oxygen
  • (C) Hydrogen
  • (D) Nitrogen

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Q. Which of the following causes Mercury's surface to be so heavily cratered?

  • (A) Lack of atmosphere
  • (B) Frequent volcanic activity
  • (C) Presence of water
  • (D) High tectonic activity

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Q. Where has water ice been detected on Mercury?

  • (A) At the equator
  • (B) On the side facing the Sun
  • (C) At the polar regions
  • (D) Evenly across the surface

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Q. Which ancient civilization first recorded observations of Mercury?

  • (A) Greeks
  • (B) Babylonians
  • (C) Romans
  • (D) Chinese

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Q. How long is a solar day on Mercury (sunrise to sunrise)?

  • (A) 24 Earth hours
  • (B) 59 Earth days
  • (C) 88 Earth days
  • (D) 176 Earth days

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Q. The heavily cratered terrain on Mercury indicates that:

  • (A) It is geologically young
  • (B) It is geologically old
  • (C) It is an active volcanic world
  • (D) It has high tectonic activity

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Q. Which type of rotation-resonance relationship does Mercury exhibit?

  • (A) 1:1
  • (B) 3:2
  • (C) 2:1
  • (D) 5:2

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Q. Which planet is most similar to Mercury in surface appearance?

  • (A) Venus
  • (B) Moon
  • (C) Mars
  • (D) Earth

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Q. Mercury's thin atmosphere is constantly replenished by:

  • (A) Solar wind and micrometeoroid impacts
  • (B) Volcanic eruptions
  • (C) Oxygen from ice
  • (D) Plant life

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Q. What is the albedo (reflectivity) of Mercury’s surface?

  • (A) 0.68
  • (B) 0.12
  • (C) 0.45
  • (D) 0.90
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