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STANDARD Chemistry Colligative Properties MCQ Question

Type: MCQ-numerical-Medium-Class 12

10% solution of urea is isotonic with 6% solution of a non-volatile solute X. What is the molecular mass of solute X?

A

6 g mol⁻¹

B

60 g mol⁻¹

C

36 g mol⁻¹

D

32 g mol⁻¹

Correct Answer

Option C

Detailed Explanation

For isotonic solutions, 10/60 = 6/x gives x = 36 g mol⁻¹.

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