UPSC Prelims 2008·GS1·science-and-technology·science and technology

Who among the following discovered heavy water?

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Last updated 23 May 2026, 3:31 pm IST
  1. AHeinrich Hertz
  2. BH. C. UreyCorrect
  3. CG. Mendel
  4. DJoseph Priestley

Explanation

The correct answer is B because Harold Clayton Urey, an American physical chemist, discovered deuterium in 1931. Deuterium is a heavy isotope of hydrogen, and when it combines with oxygen, it forms deuterium oxide, commonly known as heavy water. For this groundbreaking discovery, Urey was awarded the Nobel Prize in Chemistry in 1934. The other options are incorrect because Heinrich Hertz is known for his work on electromagnetic waves, Gregor Mendel is the father of modern genetics, and Joseph Priestley is credited with the discovery of oxygen.
science-and-technology: Who among the following discovered heavy water?

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