Exams › JEE Advanced › Chemistry

Match the solutions in Column-I with their equivalent descriptions in Columns II and III, then identify the INCORRECT match. Column-I: (A) 2 M aqueous NaOH (density = 1.25 g/mL) (B) 1.5 m aqueous NaOH (density = 1.06 g/mL) (C) 0.5 M aqueous glucose (density = 1.09 g/mL) (D) 1.5 M aqueous urea (density = 1.15 g/mL) Column-II: (i) 2 mol solute per litre of solution (ii) 1.5 mol solute per litre of solution (iii) 0.5 mol solute per litre of solution (iv) 1.5 mol solute per kg of solvent Column-III: (I) 6% (w/v) solution (II) 8% (w/v) solution (III) 9% (w/v) solution (IV) 9 g solute per 100 g solvent Which of the following matches is incorrect?

1. A - i - II
2. B - ii - I
3. C - iii - III
4. D - iv - III

Correct answer: B - ii - I

Solution

B is a 1.5 molal NaOH solution, which corresponds to 1.5 mol per kg solvent (iv) and 6 g per 100 g solvent, so matching it to (ii) and (I) is wrong.

Related JEE Advanced Chemistry questions

• Two liquids P and Q create an ideal solution. At 300 K, the vapor pressure of a solution with 1 mole of P and 3 moles of Q is 550 mmHg. If 1 mole of Q is added to this mixture at the same temperature, the vapor pressure rises by 10 mmHg. What are the vapor pressures of pure P and Q (in mmHg)?
• Two liquids, A and B, form an ideal mixture. At 30°C, a solution with 1 mole of A and 2 moles of B has a total vapor pressure of 250 mmHg. When 1 additional mole of A is added to this mixture, the vapor pressure rises to 300 mmHg. What are the vapor pressures of pure A and pure B at 30°C?
• A compound M X₂ separates into M²⁺ and X⁻ ions in water, with a dissociation extent (α) of 0.5. What is the ratio of the actual freezing point depression of the solution to the freezing point depression if no dissociation occurred?
• On dissolving 0.5 g of a non-volatile non-ionic solute to 39 g of benzene, its vapor pressure decreases from 650 mm Hg to 640 mm Hg. The depression of freezing point of benzene (in K) upon addition of the solute is ____. (Given data: Molar mass and the molal freezing point depression constant of benzene are 78 g mol⁻¹ and 5.12 K kg mol⁻¹, respectively)
• At 25°C, liquids A and B create an ideal solution for all proportions of A and B. Two mixtures with mole fractions of A as 0.25 and 0.50 exhibit total vapor pressures of 0.3 bar and 0.4 bar, respectively. Determine the vapor pressure of pure liquid B in bar.
• The ratio of solubilities of N2 and O2 gases in water from air at 25 degrees C and 1 atm total pressure is (given that air contains 80% N2 and 20% O2 by volume, and Henry's law constants K_H(N2) = 8.42 * 10⁴ atm and K_H(O2) = 4.46 * 10⁴ atm in terms of mole fraction):

⚔️ Practice JEE Advanced Chemistry free + battle 1v1 →