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JEE Main & Advanced Chemistry Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ Question Bank Topic Test - Some Basic Concepts of Chemistry (8-5-21)

  • question_answer
    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

    A) Constant proportions      

    B) Conservation of mass     

    C) Multiple proportions        

    D) Reciprocal proportions

    Correct Answer: A

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