NEET Physics: Thermodynamics — MCQ Test 22

Q6. What is the change in internal energy for \( 0.8 \, \text{moles} \) of an ideal gas heated from \( 310 \, \text{K} \) to \( 370 \, \text{K} \) at constant volume? (\( C_v = 20.8 \, \text{J mol}^{-1} \text{K}^{-1} \))

Q7. A diatomic gas undergoes an adiabatic expansion from \( 760 \, \text{K} \) to \( 380 \, \text{K} \) with \( 0.8 \, \text{moles} \). What is the work done? (\( R = 8.3 \, \text{J mol}^{-1} \text{K}^{-1} \), \( \gamma = 1.4 \))

Q8. Which thermodynamic process involves a constant temperature?

Q9. Why is the concept of thermal equilibrium essential to the Zeroth Law of Thermodynamics?

Q10. Which of the following is incorrect about reversible processes?

NEET Physics — Thermodynamics

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0.5 kg of a substance at 15°C absorbs 1800 J of heat at constant volume, reaching 45°C. What is its specific heat capacity?

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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 Thermodynamics. 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 Substance, Constant, Reaching, Specific, Capacity, and Compressed.

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Preview of Questions in this Test

Q1. 0.5 kg of a substance at 15°C absorbs 1800 J of heat at constant volume, reaching 45°C. What is its specific heat capacity?

  • A. 100 J kg⁻¹ K⁻¹
  • B. 120 J kg⁻¹ K⁻¹
  • C. 150 J kg⁻¹ K⁻¹
  • D. 180 J kg⁻¹ K⁻¹

Q2. A gas is compressed adiabatically, doing 300 J of work on the system. What is the change in internal energy?

  • A. 200 J
  • B. 250 J
  • C. 300 J
  • D. 350 J

Q3. How much heat is required to vaporize \( 2 \, \text{g} \) of water at \( 100^\circ \text{C} \) and \( 1 \, \text{atm} \)? (Latent heat = \( 2256 \, \text{J/g} \))

  • A. 4000 J
  • B. 4512 J
  • C. 5000 J
  • D. 5500 J

Q4. A system absorbs 850 J of heat and has 300 J of work done on it. What is the change in internal energy?

  • A. 1000 J
  • B. 1150 J
  • C. 1200 J
  • D. 1250 J

Q5. In an isothermal process for an ideal gas, what happens to the internal energy?

  • A. Increases
  • B. Decreases
  • C. Remains constant
  • D. Becomes zero

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