Boiling point of a $2 \%$ aqueous solution of a non-volatile solute A is equal to the boiling point of $8 \%$ aqueous solution of a non-volatile solute B. The relation between molecular weights of A and B is

Question

$\mathrm{M}_{\mathrm{A}}=4 \mathrm{M}_{\mathrm{B}}$

$\mathrm{M}_{\mathrm{B}}=4 \mathrm{M}_{\mathrm{A}}$

$\mathrm{M}_{\mathrm{A}}=8 \mathrm{M}_{\mathrm{B}}$

$\mathrm{M}_{\mathrm{B}}=8 \mathrm{M}_{\mathrm{A}}$

Solution

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