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# Solve this following

Question:

Freezing point of a $4 \%$ aqueous solution of $\mathrm{X}$ is equal to freezing point of $12 \%$ aqueous solution of Y. If molecular weight of $\mathrm{X}$ is $\mathrm{A}$, then molecular weight of $Y$ is :-

1. $\mathrm{A}$

2. $3 \mathrm{~A}$

3. $4 \mathrm{~A}$

4. $2 \mathrm{~A}$

Correct Option: , 2

Solution: