WB JEE Medical WB JEE Medical Solved Paper-2007

  • question_answer
    Which of the following is philosophers wool?

    A)  \[ZnO\]                              

    B)  \[HgO\]

    C)  \[A{{g}_{2}}O\]                               

    D)  \[CuO\]

    Correct Answer: A

    Solution :

                     ZnO is known as philosophers wool because  it is very light, white, soft wooly powder.


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