NEET Physics: Thermodynamics — MCQ Test 20

Q6. How much heat is required to raise the temperature of \( 0.4 \, \text{kg} \) of carbon from \( 10^\circ \text{C} \) to \( 30^\circ \text{C} \)? (Specific heat of carbon = \( 600 \, \text{J kg}^{-1} \text{K}^{-1} \))

Q7. What happens to the internal energy of a system when work is done on it in an adiabatic process?

Q8. Which of the following correctly describes irreversible processes?

Q9. A gas is compressed adiabatically from \( 12 \, \text{L} \) to \( 3 \, \text{L} \), increasing its pressure from \( 2 \, \text{atm} \) to \( 16 \, \text{atm} \). What is \( \gamma \)?

Q10. How many joules are equivalent to \( 500 \, \text{cal} \) of heat? (1 cal = \( 4.186 \, \text{J} \))

NEET Physics — Thermodynamics

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In an isolated system undergoing an adiabatic process, what remains constant?

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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 Isolated, Undergoing, Adiabatic, Constant, Specific, and Capacity.

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. In an isolated system undergoing an adiabatic process, what remains constant?

  • A. Temperature
  • B. Pressure
  • C. Volume
  • D. Total energy

Q2. What is the molar specific heat capacity at constant volume for a solid predicted by the law of equipartition? (\( R = 8.3 \, \text{J mol}^{-1} \text{K}^{-1} \))

  • A. 20.8 J mol⁻¹ K⁻¹
  • B. 24.9 J mol⁻¹ K⁻¹
  • C. 29.1 J mol⁻¹ K⁻¹
  • D. 33.2 J mol⁻¹ K⁻¹

Q3. A gas is compressed adiabatically from \( 16 \, \text{L} \) to \( 4 \, \text{L} \), increasing its pressure from \( 2 \, \text{atm} \) to \( 8 \, \text{atm} \). What is \( \gamma \)?

  • A. 1.33
  • B. 1.5
  • C. 1.67
  • D. 2.0

Q4. In a cyclic process, what is true about the change in internal energy?

  • A. It increases
  • B. It decreases
  • C. It remains zero
  • D. It depends on the work done

Q5. Which of the following statements is incorrect about adiabatic processes?

  • A. No heat is exchanged
  • B. Temperature remains constant
  • C. Work changes internal energy
  • D. Pressure can change

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