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2019 · Q58

Which of the following planets of our solar system has least mass?

General KnowledgePhysics
  1. ANeptune
  2. BJupiter
  3. CMars
  4. DMercury

Explanation

Among the eight planets, Mercury has the least mass - about 0.055 times the mass of the Earth. Mars, Neptune and Jupiter are all substantially more massive. Hence option D is correct.