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UPSC Combined Geo-Scientist

Chemist

  • 2 objective papers
  • 120 questions each
  • 2 h per paper
  • 100 + 300 marks

Prelims Paper I covers general studies.

UPSC Combined Geo-Scientist, Prelims · 2020 · Paper I, General Studies · Q83 of 120

Geo-Scientist Prelims 2020 General Studies Q83: Which one of the following is the correct sequence of substances…

QuestionPhysics / density

Which one of the following is the correct sequence of substances having densities in decreasing order?

  1. (a) Iron, Water, Honey, Air
  2. (b) Iron, Honey, Water, Air
  3. (c) Iron, Honey, Air, Water
  4. (d) Water, Iron, Air, Honey

Answer: (b) Iron, Honey, Water, Air

Densities (g/cm³): iron ~7.9 > honey ~1.4 > water 1.0 > air ~0.0012. So (b).

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