1.

Ordinary water contain one part of heavy water per 6000 parts by weight. The number of heavy water molecules present in drop of water of volume 0.01 ml is (Density of water is `1gm//ml)`A. `2.5 xx 10^(16)`B. `2.5 xx 10^(17)`C. `5 xx 10^(16)`D. `7.5 xx 10^(16)`

Answer» Correct Answer - C
`6000 -1 0.01 -?`
No. of molecules `(w)/(Mw) xx N`


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