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Question

Proust gave the law of constant proportions.


A
True
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B
False
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Solution

The correct option is A True

Law of Definite Proportions or Law of Constant Composition:

(1)This law was put forth by A Lavoisier and Joseph Proust in 1799.

(2)The law states that “A pure chemical compound always contains same elements combined together in same fixed proportions by mass”.

Therefore,the given statement is true.


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