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WBCS Preliminary Examination 2020 — General Studies · Question 112 of 200

Q112
General SciencePhysics
Speed of sound is the maximum in
  1. a.vacuum
  2. b.gases
  3. c.liquids
  4. d.solids

Answer: (D) solids

Sound travels fastest through solids because their tightly packed molecules transmit vibrations most efficiently; it cannot travel through a vacuum at all.