MCQ
The percentage of copper and oxygen in samples of $CuO$ obtained by different methods were found to be the same. This illustrates the law of
  • Constant proportions
  • B
    Conservation of mass
  • C
    Multiple proportions
  • D
    Reciprocal proportions

Answer

Correct option: A.
Constant proportions
a
The percentage of copper and oxygen in a sample of $CuO$ obtained from different methods were found to be same. This proves the law of Constant proportion as the ratio of $Cu : O$ remains constant

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