NEET Chemistry: Solutions — MCQ Test 19

Q6. A gas has a Henry’s law constant of 300 bar. If its partial pressure is 6 bar, what is the mole fraction in the solution?

Q7. A solution containing 0.1 mole of a non-volatile solute in 1 kg of water has an osmotic pressure of 2.46 atm at 27°C. What is the van’t Hoff factor? (\( R = 0.0821 \, \text{L atm mol}^{-1} \text{K}^{-1} \), assume 1 L solution)

Q8. What is the molality of a solution containing 14 g of ethylene glycol (molar mass = 62 g/mol) in 350 g of water?

Q9. A 0.2 molal Na₂SO₄ solution has a van’t Hoff factor of 2.5. What is the freezing point depression? (\( K_f = 1.86 \, \text{K kg mol}^{-1} \))

Q10. A gas has a partial pressure of 5 bar and a Henry’s law constant of 500 bar. What is the mole fraction in the solution?

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What is the mass percentage of a solution prepared by dissolving 15 g of a solute in 85 g of water?

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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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Preview of Questions in this Test

Q1. What is the mass percentage of a solution prepared by dissolving 15 g of a solute in 85 g of water?

  • A. 10%
  • B. 12%
  • C. 15%
  • D. 20%

Q2. What is the boiling point elevation of a solution containing 10 g of fructose (molar mass = 180 g/mol) in 400 g of water? (\( K_b = 0.52 \, \text{K kg mol}^{-1} \))

  • A. 0.06 K
  • B. 0.07 K
  • C. 0.0723 K
  • D. 0.08 K

Q3. What is the mass of ethanol (molar mass = 46 g/mol) in 500 g of a solution if its mole fraction is 0.2 and water is the solvent?

  • A. 92 g
  • B. 138 g
  • C. 46 g
  • D. 100 g

Q4. The vapor pressure of pure water is 25 mm Hg at a certain temperature. What is the vapor pressure of a solution containing 0.1 mole of a non-volatile solute in 0.9 mole of water?

  • A. 20 mm Hg
  • B. 21 mm Hg
  • C. 22 mm Hg
  • D. 22.5 mm Hg

Q5. What is the mole fraction of a solute if its solution lowers the vapor pressure of water from 25 mm Hg to 24 mm Hg?

  • A. 0.02
  • B. 0.03
  • C. 0.05
  • D. 0.04

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