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The freezing point of one molal NaCl sol...

The freezing point of one molal NaCl solution assuming NaCI to be `100%` dissociated in water is (molal depression constant is 1.86)

A

`-2.72^@C`

B

`-3.72^@C`

C

`2.72^@C`

D

`3.72^@C`

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The correct Answer is:
B
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