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MHT CET202617 April 2026Morning ShiftChemistrySolutionsActual

Which of the following concentrations of solutions of urea in water exhibits minimum freezing point depression?

Options

  1. A0.12 m
  2. B0.18 m
  3. C0.08 m
  4. D0.06 m

Correct answer

D. 0.06 m

Step-by-step solution

The depression in freezing point is given by T_f = i K_f m . For urea, being a non-electrolyte, the van 't Hoff factor i = 1 . Thus, T_f m . To exhibit the minimum freezing point depression, the solution must have the minimum molality. Among the given options, 0.06 m is the minimum concentration. Therefore, the 0.06 m urea solution exhibits the minimum freezing point depression. Answer: 0.06 m

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