Thermodynamics MCQ

Practice the most important Thermodynamics MCQ MCQs with answers and detailed explanations to improve your preparation.

Q1. What is thermodynamics?

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Q2. Zeroth law of thermodynamics helps to define:

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Q3. First law of thermodynamics is a statement of:

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Q4. Second law of thermodynamics states that:

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Q5. What is entropy?

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Q6. Which cycle is ideal for heat engines?

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Q7. A perfect gas is one that:

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Q8. Enthalpy is defined as:

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Q9. The internal energy of an ideal gas depends on:

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Q10. An isothermal process occurs at:

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Q11. Adiabatic process means:

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Q12. Specific heat at constant pressure is always:

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Q13. Why does heat flow occur?

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Q14. Clausius statement of second law states:

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Q15. Which of the following is a state function?

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Q16. Work done during free expansion of gas is:

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Q17. Entropy change in reversible process is:

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Q18. Heat capacity ratio (Ξ³) is defined as:

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Q19. Isobaric process occurs at:

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Q20. Thermal efficiency is ratio of:

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Q21. Which of these is unit of entropy?

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Q22. P-V diagram shows relationship between:

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Q23. The work done in an isochoric process is:

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Q24. A saturated vapor is:

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Q25. Which law correlates pressure, volume, and temperature of gases?

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Q26. Gibbs free energy is used to predict:

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Q27. Which is a path function?

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Q28. An isentropic process is:

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Q29. Heat engines convert:

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Q30. Which property of pure substance is independent of mass?

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