NEET Physics: Behaviour of Perfect Gas and Kinetic Theory — MCQ Test 4

Q6. A solid has a molar specific heat capacity of \(25.5 \, \text{J mol}^{-1} \text{K}^{-1}\). How many degrees of freedom per atom does it have? (\(R = 8.31 \, \text{J mol}^{-1} \text{K}^{-1}\))

Q7. A gas occupies 5.6 litres at STP. How many moles of the gas are present? (Molar volume at STP = 22.4 litres)

Q8. A gas at 1 atm and 273 K has a volume of 8 litres. If the pressure increases to 4 atm at constant temperature, what is the new volume?

Q9. A mixture of 0.2 moles of helium and 0.8 moles of oxygen is at 300 K in a 10-litre container. What is the total pressure? (\(R = 8.31 \, \text{J mol}^{-1} \text{K}^{-1}\))

Q10. A gas at 1 atm and 300 K has a volume of 10 litres. If the volume is reduced to 5 litres at constant temperature, what is the new pressure?

NEET PhysicsBehaviour of Perfect Gas and Kinetic Theory

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A gas mixture contains 8 g of helium and 8 g of oxygen. What is the ratio of their partial pressures?

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Physics preparation, focusing specifically on the chapter Behaviour of Perfect Gas and Kinetic Theory. 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 Contains, Pressures, Molecular, Temperature, Decreases, and Constant.

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. A gas mixture contains 8 g of helium and 8 g of oxygen. What is the ratio of their partial pressures?

  • A. 1:4
  • B. 1:1
  • C. 4:1
  • D. 8:1

Q2. A gas at 3 atm and 600 K has a density of \(0.96 \, \text{kg m}^{-3}\). What is its molecular mass? (\(R = 8.31 \, \text{J mol}^{-1} \text{K}^{-1}\), 1 atm = \(1.01 \times 10^5 \, \text{Pa}\))

  • A. 12 g/mol
  • B. 16 g/mol
  • C. 20 g/mol
  • D. 24 g/mol

Q3. A gas at 2 atm and 400 K has a volume of 10 litres. If the temperature decreases to 100 K at constant pressure, what is the new volume?

  • A. 2.5 litres
  • B. 5.0 litres
  • C. 7.5 litres
  • D. 10.0 litres

Q4. A gas at 2.5 atm and 500 K has a density of \(0.96 \, \text{kg m}^{-3}\). What is its molecular mass? (\(R = 8.31 \, \text{J mol}^{-1} \text{K}^{-1}\), 1 atm = \(1.01 \times 10^5 \, \text{Pa}\))

  • A. 12 g/mol
  • B. 16 g/mol
  • C. 20 g/mol
  • D. 24 g/mol

Q5. What is the heat required to raise the temperature of 0.2 moles of a triatomic gas by 10 K at constant volume? (\(R = 8.31 \, \text{J mol}^{-1} \text{K}^{-1}\), no vibrational modes)

  • A. 33.24 J
  • B. 49.86 J
  • C. 66.48 J
  • D. 83.10 J

+ 5 more questions in the actual test

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