JEE Main 2026 · 6 Apr · Shift 2 · Chemistry Q55

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ChemistrySingle correct+4 / -1Question 55 of 75

Given below are two statements :

Statement I : $\ce{H2O}$ molecules move from the chamber 1 to chamber 2.

Statement II : The osmotic pressure of a solution prepared by dissolving 50 mg of potassium sulphate (molar mass = 174 g/mol) in 2 L of water (at 27 °C) is 0.0107 bar. (Given: R = 0.083 dm³ bar K $^{-1}$ mol $^{-1}$ and assume complete dissociation of electrolyte)

In the light of the above statements, choose the correct answer from the options given below :

Two chambers separated by a semi-permeable membrane: chamber 1 holds 18 g glucose in 100 mL aqueous solution, chamber 2 holds 30 g glucose in 250 mL aqueous solution.

Both Statement I and Statement II are true

Both Statement I and Statement II are false

Statement I is true but Statement II is false

Statement I is false but Statement II is true

Answer and worked solution

Official answer: D

Statement I. Chamber 1: $\tfrac{18}{180}=0.1$ mol in 0.1 L, 1 M. Chamber 2: $\tfrac{30}{180}$ mol in 0.25 L, 0.67 M. Water moves from the dilute side (2) to the concentrated side (1). False.

Statement II. $\ce{K2SO4}$ gives $i=3$ :
$\pi=3\times\frac{0.050/174}2\times0.083\times300=0.0107\text{ bar}.$
True.

(D)

Topics:Colligative properties

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JEE Main 2026 · 6 Apr · Shift 2, Chemistry question 55