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The number of meutrons in a drop water (...

The number of meutrons in a drop water `(20 drops =1 mL)` at `4^(@)C`

A

`6.023 xx 10^(22)`

B

`1.338 xx 10^(22)`

C

`6.023 xx 10^(20)`

D

`7.338 xx 10^(22)`

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The correct Answer is:
B
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