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9th Class Science Is Matter Around Us Pure Question Bank Case Based MCQs - Is Matter Around us Pure

  • question_answer
    Which of the following substances is a compound?

    A) Oxygen         

    B) Common salt

    C) Gold                                        

    D) Air

    Correct Answer: B

    Solution :

    [b] Common salt, which is sodium chloride (Nad) made up of two elements in fixed proportion is a compound.


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