NEET Chemistry: Solutions — MCQ Test 10

Q6. A 0.15 molal solution of CaCl₂ in water has a freezing point depression of 0.837°C. What is the van’t Hoff factor? (\( K_f = 1.86 \, \text{K kg mol}^{-1} \))

Q7. A solution boils at 100.26°C at 1 atm. What is the molality if \( K_b = 0.52 \, \text{K kg mol}^{-1} \)?

Q8. A solution of two volatile liquids has vapor pressures of 250 mm Hg and 350 mm Hg for pure components. If the mole fraction of the first is 0.6, what is the total vapor pressure?

Q9. A solution of a non-volatile solute in water has a vapor pressure of 23.5 mm Hg at a temperature where pure water’s vapor pressure is 25 mm Hg. If the solution’s boiling point is 100.26°C at 1 atm, what is the molality? (\( K_b = 0.52 \, \text{K kg mol}^{-1} \))

Q10. A solution of a non-volatile solute reduces the vapor pressure of a solvent from 30 mm Hg to 27 mm Hg. What is the mole fraction of the solvent?

NEET Chemistry — Solutions

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What is the molality of a solution containing 10 g of glycerol (molar mass = 92 g/mol) in 200 g of water?

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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 Molality, Solution, Containing, Glycerol, Pressure, and Elevation.

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 molality of a solution containing 10 g of glycerol (molar mass = 92 g/mol) in 200 g of water?

  • A. 0.5 mol/kg
  • B. 0.5435 mol/kg
  • C. 0.6 mol/kg
  • D. 0.4 mol/kg

Q2. The osmotic pressure of a 0.01 M solution at 27°C is: (\( R = 0.0821 \, \text{L atm mol}^{-1} \text{K}^{-1} \))

  • A. 0.2 atm
  • B. 0.3 atm
  • C. 0.246 atm
  • D. 0.5 atm

Q3. The van’t Hoff factor of a 0.06 m K₂SO₄ solution is 2.5. What is the boiling point elevation? (\( K_b = 0.52 \, \text{K kg mol}^{-1} \))

  • A. 0.06 K
  • B. 0.07 K
  • C. 0.08 K
  • D. 0.078 K

Q4. What is the mole fraction of a solute if the vapor pressure of a solution is 27 mm Hg and that of pure solvent is 30 mm Hg?

  • A. 0.08
  • B. 0.09
  • C. 0.11
  • D. 0.1

Q5. A solution of a gas in water has a mole fraction of 0.02 at 5 bar pressure. If the Henry’s law constant decreases by 20% due to a temperature change, what is the new partial pressure?

  • A. 4.5 bar
  • B. 5 bar
  • C. 3.5 bar
  • D. 4 bar

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