The law of definite proportions was stated by ______.

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RRC Group D Previous Paper 10 (Held On: 28 Sep 2018 Shift 1)
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  1. Democritus
  2. Lavoisier
  3. Proust
  4. John Dalton

Answer (Detailed Solution Below)

Option 3 : Proust
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  • The Law of definite proportions states that a compound will always contain the same proportion of elements by mass.
  • It was given by Proust.
  • Lavoisier discovered the role of oxygen in combustion.
  • Democritus was a Greek Mathematician.
  • Dalton gave the atomic theory which states that the atom of different size varies in size and mass.
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