The law of definite proportions was given by -

Question

Question

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RRB JE CBT I - (Held On: 31 May 2019 Shift 3)

Answer 1

The correct answer is Joseph L. Proust.

In News

Joseph L. Proust is known for formulating the Law of Definite Proportions, also known as Proust's Law, in 1799.

Key Points

Joseph L. Proust was a French chemist who made significant contributions to analytical chemistry.
He demonstrated that chemical compounds are composed of a fixed ratio of elements as determined by mass.
Proust's Law of Definite Proportions states that a chemical compound always contains the exact same proportion of elements by mass.
Joseph Louis Proust
- Born - September 26, 1754
- Died - July 5, 1826
- Nationality - French

Additional Information

Antoine Lavoisier
- Known as the "Father of Modern Chemistry."
- Formulated the Law of Conservation of Mass.
- Introduced the concept of chemical elements.
Jöns Jacob Berzelius
- Developed the modern system of chemical symbols.
- Discovered several elements including silicon and selenium.
- Formulated the concept of "isomerism" and "catalysis."
John Dalton
- Proposed Dalton's Atomic Theory.
- Introduced the concept of atomic weights.
- Known for the law of multiple proportions.