Solar System MCQs with answers Page - 41

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Q. Which of these characteristics is NOT true for Mercury?

  • (A) Closest planet to the Sun
  • (B) Has a thick atmosphere
  • (C) No moons
  • (D) Rocky surface

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Q. The presence of scarps (cliffs) on Mercury suggests:

  • (A) The planet is expanding
  • (B) The planet is shrinking
  • (C) Constant volcanic activity
  • (D) Tidal locking

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Q. Mercury's orbital inclination is approximately:

  • (A) 0°
  • (B) 3°
  • (C) 7°
  • (D) 12°

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Q. What is Mercury's escape velocity?

  • (A) 4.25 km/s
  • (B) 5.03 km/s
  • (C) 9.8 km/s
  • (D) 11.2 km/s

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Q. Mercury's perihelion precession was explained by which theory?

  • (A) Newton's Law
  • (B) Theory of Relativity
  • (C) Kepler's Laws
  • (D) Copernican Model

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Q. Mercury’s atmosphere is referred to as:

  • (A) Exosphere
  • (B) Troposphere
  • (C) Ionosphere
  • (D) Stratosphere

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Q. Mercury's orbital eccentricity is approximately:

  • (A) 0.01
  • (B) 0.21
  • (C) 0.38
  • (D) 0.67

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Q. Mercury’s interior is believed to have a:

  • (A) Completely solid core
  • (B) Liquid outer core and solid inner core
  • (C) Molten mantle only
  • (D) Hollow structure

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Q. The Caloris Basin on Mercury was formed by:

  • (A) Volcano
  • (B) Meteorite impact
  • (C) Tectonic activity
  • (D) Solar winds

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Q. Which of the following elements is NOT significant in Mercury’s exosphere?

  • (A) Sodium
  • (B) Potassium
  • (C) Calcium
  • (D) Methane
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