JEE Main & Advanced Chemistry Some Basic Concepts of Chemistry Question Bank Significant figures Units for measurement

  • question_answer 81.4 g sample of ethyl alcohol contains 0.002 g of water. The amount of pure ethyl alcohol to the proper number of significant figures is

    A)                 81.398 g               

    B)                 71.40 g

    C)                 91.4 g    

    D)                 81 g

    Correct Answer: A

    Solution :

                    Pure ethyl alcohol \[=81.4-0.002=81.398\].


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