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Q)

The mole fraction of NaCl in a solution containing 1 mole of NaCl in 1000g of water is

$\begin{array}{1 1}(a)\;0.0177&(b)\;0.001\\(c)\;0.5&(d)\;0.244\end{array}$

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A)
Mole fraction =$\large\frac{1}{1+\Large\frac{1000}{18}}$
$\Rightarrow 0.0177$
Hence (a) is the correct option.
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