NEET Physics: Thermodynamics — MCQ Test 1

Q6. An ideal gas expands isothermally at \( 480 \, \text{K} \) from \( 6 \, \text{L} \) to \( 18 \, \text{L} \) with \( 0.6 \, \text{moles} \). What is the work done by the gas? (\( R = 8.3 \, \text{J mol}^{-1} \text{K}^{-1} \))

Q7. Which of the following statements is incorrect about an adiabatic expansion of an ideal gas?

Q8. According to the Kelvin-Planck statement, what is impossible for a heat engine?

Q9. What is the main difference between heat and internal energy in thermodynamics?

Q10. An ideal gas expands isothermally at \( 450 \, \text{K} \) from \( 4 \, \text{L} \) to \( 12 \, \text{L} \) with \( 0.3 \, \text{moles} \). What is the work done by the gas? (\( R = 8.3 \, \text{J mol}^{-1} \text{K}^{-1} \))

Q11. How much heat is required to raise the temperature of \( 0.2 \, \text{kg} \) of lead from \( 50^\circ \text{C} \) to \( 80^\circ \text{C} \)? (Specific heat of lead = \( 127.7 \, \text{J kg}^{-1} \text{K}^{-1} \))

Q12. In an isothermal compression of an ideal gas, what balances the work done on the system?

Q13. In an isobaric process, \( 1.5 \, \text{moles} \) of an ideal gas expand from \( 9 \, \text{L} \) to \( 15 \, \text{L} \) at \( 380 \, \text{K} \). What is the work done by the gas? (\( R = 8.3 \, \text{J mol}^{-1} \text{K}^{-1} \))

Q14. In an isochoric process, what is the primary effect of heat addition?

Q15. A gas undergoes an adiabatic expansion from \( 22 \, \text{L} \) to \( 66 \, \text{L} \), reducing its pressure from \( 12 \, \text{atm} \) to \( 2 \, \text{atm} \). What is the value of \( \gamma \)?

NEET Physics — Thermodynamics

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A gas is compressed adiabatically, increasing its pressure from 1 atm1 \, \text{atm} to 4 atm4 \, \text{atm} in a 10 L10 \, \text{L} container. What is the final volume? (γ=1.6\gamma = 1.6)

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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 15 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 Compressed, Adiabatically, Increasing, Pressure, Container, and Monatomic.

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 is compressed adiabatically, increasing its pressure from 1 atm1 \, \text{atm} to 4 atm4 \, \text{atm} in a 10 L10 \, \text{L} container. What is the final volume? (γ=1.6\gamma = 1.6)

  • A.

    2.5 L

  • B.

    3.2 L

  • C.

    4.0 L

  • D.

    5.0 L

Q2.

A monatomic gas undergoes an adiabatic expansion from 740 K740 \, \text{K} to 370 K370 \, \text{K} with 0.7 moles0.7 \, \text{moles}. What is the work done? (R=8.3 J mol−1K−1R = 8.3 \, \text{J mol}^{-1} \text{K}^{-1} , γ=1.67\gamma = 1.67)

  • A.

    3000 J

  • B.

    3209 J

  • C.

    3400 J

  • D.

    3600 J

Q3.

A gas at 3 atm3 \, \text{atm} and 400 K400 \, \text{K} is cooled isochorically to 200 K200 \, \text{K} . What is the final pressure?

  • A.

    1.0 atm

  • B.

    1.5 atm

  • C.

    2.0 atm

  • D.

    2.5 atm

Q4.

Which of the following correctly characterizes an adiabatic process?

  • A.

    Constant temperature

  • B.

    Constant pressure

  • C.

    Constant volume

  • D.

    No heat transfer

Q5.

What is the primary condition for a system to be in mechanical equilibrium?

  • A.

    Equal temperature

  • B.

    No net force

  • C.

    Constant volume

  • D.

    Zero heat flow

+ 10 more questions in the actual test

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