NEET Chemistry: Solutions — MCQ Test 12

Q6. What is the mass of solute required to prepare 250 g of a 12% by mass solution?

Q7. A solution of two volatile liquids has vapor pressures of 400 mm Hg and 600 mm Hg for pure components. If the vapor pressure of the solution is 520 mm Hg and the mole fraction of the first component is 0.6, does it obey Raoult’s law?

Q8. What is the mass percentage of a solution prepared by dissolving 40 g of salt in 160 g of water?

Q9. The vapor pressure of pure methanol is 90 mm Hg. What is the vapor pressure of a solution with a solute mole fraction of 0.3?

Q10. A solution is prepared by mixing 20 g of a solute (molar mass = 40 g/mol) with 80 g of water. What is the mole fraction of the solute?

NEET Chemistry — Solutions

Free MCQ Test 12 of 20

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What is the freezing point depression of a 0.2 molal solution of a non-electrolyte in water? (\( K_f = 1.86 \, \text{K kg mol}^{-1} \))

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Chemistry preparation, focusing specifically on the chapter Solutions. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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Key concepts covered in this specific test include Freezing, Depression, Solution, Electrolyte, Pressure, and Fraction.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1. What is the freezing point depression of a 0.2 molal solution of a non-electrolyte in water? (\( K_f = 1.86 \, \text{K kg mol}^{-1} \))

  • A. 0.186 K
  • B. 0.372 K
  • C. 0.5 K
  • D. 1.86 K

Q2. A solution reduces the vapor pressure of a solvent from 35 mm Hg to 33 mm Hg. What is the mole fraction of the solute?

  • A. 0.05
  • B. 0.06
  • C. 0.0571
  • D. 0.07

Q3. A 0.15 molal KCl solution has a van’t Hoff factor of 1.85. What is the freezing point depression? (\( K_f = 1.86 \, \text{K kg mol}^{-1} \))

  • A. 0.45 K
  • B. 0.5 K
  • C. 0.5162 K
  • D. 0.55 K

Q4. A solute dissociates into 3 ions with a van’t Hoff factor of 1.8. What is the degree of dissociation?

  • A. 0.3
  • B. 0.5
  • C. 0.6
  • D. 0.4

Q5. A solution contains 0.05 mole of a gas dissolved in 1 kg of water at a partial pressure of 10 bar. If the temperature changes and the solubility doubles, what is the new Henry’s law constant?

  • A. 150 bar
  • B. 200 bar
  • C. 50 bar
  • D. 100 bar

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