NEET Physics: Thermodynamics — MCQ Test 4

Q6. How much work is done by \( 1 \, \text{mole} \) of an ideal gas in an isothermal expansion from \( 3 \, \text{L} \) to \( 9 \, \text{L} \) at \( 500 \, \text{K} \)? (\( R = 8.3 \, \text{J mol}^{-1} \text{K}^{-1} \))

Q7. A gas at \( 7 \, \text{atm} \) and \( 40^\circ \text{C} \) in a \( 5 \, \text{L} \) container is cooled isochorically to \( -20^\circ \text{C} \). What is the final pressure?

Q8. How much heat is required to raise the temperature of \( 0.2 \, \text{kg} \) of silver from \( 30^\circ \text{C} \) to \( 50^\circ \text{C} \)? (Specific heat of silver = \( 236.1 \, \text{J kg}^{-1} \text{K}^{-1} \))

Q9. A gas undergoes an adiabatic compression from \( 20 \, \text{L} \) to \( 5 \, \text{L} \), increasing its pressure from \( 2 \, \text{atm} \) to \( 16 \, \text{atm} \). What is the value of \( \gamma \)?

Q10. Which of the following statements is incorrect about an isochoric process?

Q11. A gas at \( 6 \, \text{atm} \) and \( 50^\circ \text{C} \) in a \( 4 \, \text{L} \) container is heated isochorically to \( 150^\circ \text{C} \). What is the final pressure?

Q12. Which of the following statements is correct about the Second Law of Thermodynamics?

Q13. A system releases \( 300 \, \text{J} \) of heat and has \( 150 \, \text{J} \) of work done on it. What is the change in internal energy?

Q14. How much heat is required to raise the temperature of \( 0.45 \, \text{kg} \) of aluminium from \( 30^\circ \text{C} \) to \( 60^\circ \text{C} \)? (Specific heat of aluminium = \( 900 \, \text{J kg}^{-1} \text{K}^{-1} \))

NEET Physics — Thermodynamics

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Which of the following statements is correct about isothermal processes for an ideal gas?

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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 14 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 Following, Statements, Isothermal, Processes, Isobaric, and Internal.

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. Which of the following statements is correct about isothermal processes for an ideal gas?

  • A. Internal energy decreases
  • B. Pressure remains constant
  • C. \( P V \) remains constant
  • D. No work is done

Q2. Why does an isobaric process involve both internal energy change and work?

  • A. Volume remains constant
  • B. Heat supplies both energy and work
  • C. Temperature decreases
  • D. No heat is added

Q3. What is the significance of a quasi-static process in thermodynamics?

  • A. It ensures rapid changes
  • B. It maintains equilibrium at every stage
  • C. It prevents work from being done
  • D. It eliminates heat transfer

Q4. In an isobaric process, \( 0.7 \, \text{moles} \) of gas expand from \( 320 \, \text{K} \) to \( 400 \, \text{K} \). What is the heat supplied if \( C_p = 29.1 \, \text{J mol}^{-1} \text{K}^{-1} \)?

  • A. 1500 J
  • B. 1632 J
  • C. 1700 J
  • D. 1800 J

Q5. A system absorbs \( 710 \, \text{J} \) of heat and performs \( 260 \, \text{J} \) of work. What is the change in internal energy?

  • A. 400 J
  • B. 450 J
  • C. 500 J
  • D. 550 J

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