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  9. Q70

UPPSC PCS 2016 · Question 70 of 145

The substance used as moderator and coolant both, in nuclear reactors is:

Science

  1. AOrdinary water
  2. BHeavy waterCorrect
  3. CLiquid Ammonia
  4. DLiquid Hydrogen

Answer: B. Heavy water

Explanation

Heavy water is used as a moderator and coolant in nuclear power plants. Heavy water is the oxide of deuterium, an isotope of hydrogen.

Source: edurev.in UPPSC Prelims 2016 GS Paper I with Answer Key and Solutions; answers per official UPPSC key (Booklet C)

← Q69View full paper (145 questions)Q71 →

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