The value of $K_{f}$ for water is ${1.86}^{o}$ , calculated from glucose solution. The value of $K_{f}$ for water calculated for $N a C l$ solution will be :

= 1.86

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< 1.86

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> 1.86

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zero

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Solution

The correct option is A $= 1.86$
The value of $K_{f}$ for water calculated for NaCl solution will be equal to 1.86.
$K_{f}$ is characteristic constant for given solvent; defined as the depression in the freezing point produced when 1 mole of solute dissolved in 1 kg of solvent.

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