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Chemistry

Solutions and Colligative Properties

Appeared 56 times across 22 years of JEE Main papers — about 2.5 questions a year. Every one of them is below, with a full worked solution.

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01Medium56×since 2002Q1981

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : At 10

^\circ

C, the density of a 5 M solution of KCl [atomic masses of K & Cl are 39 & 35.5 g mol^

-

1 respectively], is 'x' g ml^

-

1. The solution is cooled to

-

^\circ

C. The molality of the solution will remain unchanged. Reason (R) : The molality of a solution does not change with temperature as mass remains unaffected with temperature. In the light of the above statements, choose the correct answer from the options given below :

Solutions and Colligative Properties — previous year questions · Alror