Thermodynamics MCQ

Q1. What is thermodynamics?

Q2. Zeroth law of thermodynamics helps to define:

Q3. First law of thermodynamics is a statement of:

Q4. Second law of thermodynamics states that:

Q5. What is entropy?

Q6. Which cycle is ideal for heat engines?

Q7. A perfect gas is one that:

Q8. Enthalpy is defined as:

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

Q10. An isothermal process occurs at:

Q11. Adiabatic process means:

Q12. Specific heat at constant pressure is always:

Q13. Why does heat flow occur?

Q14. Clausius statement of second law states:

Q15. Which of the following is a state function?

Q16. Work done during free expansion of gas is:

Q17. Entropy change in reversible process is:

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

Q19. Isobaric process occurs at:

Q20. Thermal efficiency is ratio of:

Q21. Which of these is unit of entropy?

Q22. P-V diagram shows relationship between:

Q23. The work done in an isochoric process is:

Q24. A saturated vapor is:

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

Q26. Gibbs free energy is used to predict:

Q27. Which is a path function?

Q28. An isentropic process is:

Q29. Heat engines convert:

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

Q31. Work done in reversible expansion of ideal gas:

Q32. The Kelvin scale is based on:

Q33. Steam quality refers to:

Q34. Which cycle is ideal for refrigeration?

Q35. The internal energy of ideal gas depends mainly on:

Q36. Specific heat at constant volume Cv is:

Q37. Which process occurs at constant temperature?

Q38. The foundation of all thermodynamics laws is:

Q39. For spontaneous process, change in Gibbs free energy is: