1.

Percentage of copper and oxygen in sample ofCuO obtained by different methods were foundto be same. This proves the law of-(A) Constant proportion(B) Multiple proportion(C) Reciprocal proportion(D) of these

Answer»

Ans: A) Constant Proportion

Law of constant proportion states that the composition of a chemical compound is independent of its source and method of preparation and the percentage of the constituent elements remain constant

Constant proportion is the right answer



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