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If the volume of a drop of water is 0.00...

If the volume of a drop of water is `0.0018 ml` then the number of water molecules present in two drop of water at room temperature is :

A

`1`.`6.022`x`10^23`

B

`2`. `6.022`x`10^21`

C

`3`. `6.022`x`10^19`

D

`4`. NONE OF THESE

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The correct Answer is:
D
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