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SSC CHSL 2022 PYQ — Question 39

SSC CHSL - 24 May 2022 - Shift 3 • General Awareness • Q39

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Which French chemist summarised his experiment in 1806, and proved that the mass ratio of elements in a chemical compound is always the same, regardless of the source of the compound?
 

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Correct answer: A

Explanation

The correct answer is option 1 i.e. Joseph Proust.

  • The French chemist Joseph Proust stated the law: 'A chemical compound always contains the same elements combined together in the same proportion by mass.'
  • The Law of Constant Composition is also known as the Law of Definite Proportions.
  • It is different from the Law of Multiple Proportions although both stem from Lavoisier's Law of Conservation of Mass.