NEET Physics: Behaviour of Perfect Gas and Kinetic Theory — MCQ Test 13

Q6. How much heat is required to raise the temperature of 0.25 moles of a diatomic gas by 20 K at constant volume, with no vibrational modes? (\(R = 8.31 \, \text{J mol}^{-1} \text{K}^{-1}\))

Q7. A gas has a \(C_p\) of \(29.8 \, \text{J mol}^{-1} \text{K}^{-1}\). What is the ratio of specific heats (\(\gamma\))? (\(R = 8.31 \, \text{J mol}^{-1} \text{K}^{-1}\))

Q8. What is the average translational kinetic energy of a helium atom at 1000 K? (\(k_B = 1.38 \times 10^{-23} \, \text{J K}^{-1}\))

Q9. A solid has a molar specific heat capacity of \(25 \, \text{J mol}^{-1} \text{K}^{-1}\) at room temperature. How many degrees of freedom does each atom have?

Q10. What is the molar specific heat at constant volume (\(C_v\)) for a diatomic gas with no vibrational modes? (\(R = 8.31 \, \text{J mol}^{-1} \text{K}^{-1}\))

NEET Physics — Behaviour of Perfect Gas and Kinetic Theory

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The rms speed of a gas is 450 m/s at 225 K. At what temperature will the rms speed be 900 m/s?

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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 Temperature, Molecules, Molecular, Internal, Diatomic, and Vibrational.

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. The rms speed of a gas is 450 m/s at 225 K. At what temperature will the rms speed be 900 m/s?

  • A. 450 K
  • B. 675 K
  • C. 900 K
  • D. 1125 K

Q2. A gas mixture has equal numbers of oxygen and argon molecules at 300 K. What is the ratio of their rms speeds? (Molecular mass: \(O_2 = 32 \, \text{u}\), Ar = 39.9 u)

  • A. 1:1.12
  • B. 1:1
  • C. 1.12:1
  • D. 1.25:1

Q3. What is the total internal energy of 0.7 moles of a diatomic gas at 200 K with no vibrational modes? (\(R = 8.31 \, \text{J mol}^{-1} \text{K}^{-1}\))

  • A. 2.33 kJ
  • B. 2.91 kJ
  • C. 3.49 kJ
  • D. 4.07 kJ

Q4. A gas mixture contains 12 g of helium and 28 g of nitrogen. What is the ratio of their partial pressures?

  • A. 1:3
  • B. 1:1
  • C. 3:1
  • D. 7:1

Q5. The rms speed of argon molecules is 430 m/s at 300 K. What is the rms speed of nitrogen molecules at the same temperature? (Atomic mass: Ar = 39.9 u, \(N_2 = 28 \, \text{u}\))

  • A. 430 m/s
  • B. 513 m/s
  • C. 600 m/s
  • D. 700 m/s

+ 5 more questions in the actual test

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