1.

A solution prepared by dissolving 0.8gm of naphthalene in 100g of C Cl_4 has a boiling point elevation of 0.4^@C. A 1.24 g of an un known solute in same amount of C Cl_4 produced boiling point elevation of 0.62^@C, then molar mass of un-known solute is

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25g
50g
75g
128g

Answer :D


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