Who proposed the Law of Definite Proportions (Constant Composition) in 1799?

Type: MCQ • Marks: 1

A. Joseph Proust

B. J.J. Berzelius

C. Antoine Lavoisier

D. John Dalton

Explanation

Joseph Proust demonstrated that a given compound always contains exact mass proportions of its elements.

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Class 9th Science (MCQ)

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