MHT CET 2024 Chemistry question

"A given compound always contains the same proportion of elements" is a statement of -

(A)Law of combining volumes of gases
(B)Law of conservation of mass
(C)Law of multiple proportions
(D)Law of definite proportionsCorrect

Answer: (D)

Solution

The law of definite (constant) proportions, given by Proust, states that a given chemical compound always contains the same elements combined in the same fixed proportion by mass, whatever its source or method of preparation (e.g. pure water always has H : O = 1 : 8 by mass). Hence (D). The law of conservation of mass

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Question ID VK-092910