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  1. The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is

    2. A.

     1.568 x 103
    B.

     6.023 x 1019
    C.

     4.84 x 1017
    D.

     6.023 x 1023

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    Answer : Option B

    Explanation :

    The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is 6.023 x 1019.

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