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NEET levelSingle correct optionDifficulty 1 of 3so196

Which of the following non-volatile, non-electrolyte aqueous solutions has the highest boiling point?

A $0.20 mol k g^{- 1}$ glucose
B $0.10 mol k g^{- 1}$ glucose
C $0.10 mol k g^{- 1}$ urea
D $0.10 mol k g^{- 1}$ sucrose

Answer: A

For non-electrolytes

Δ T_{b} = K_{b} m

, and

K_{b}

is the same since the solvent is water. The solution with the largest molality has the largest elevation, which is the

0.20 mol k g^{- 1}

solution.

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