NEET Sample Paper NEET Sample Test Paper-75

  • question_answer
    Gold is a chemical element with the symbol Au and atomic number 79. It is used to make ornamental objects a jewellry four thousands of years 18 carat gold contain

    A) \[75\,\]% gold

    B) \[20\,\]% gold

    C) \[80\,\] % gold

    D) \[38.07\,\]% gold

    Correct Answer: A

    Solution :

    We know that \[24\,% gold =100\,%\] \[\therefore \,\,\,\,\,\,\,\,\,\,18\,%\,\,gold=\frac{100\times 18}{24}=75\,%\]


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