Quiz for Laws of Thermodynamics

Q1: Which law of thermodynamics introduces the concept of entropy?

A. Zeroth Law B. First Law C. Second Law D. Third Law

Q2: The first law of thermodynamics is a restatement of which principle?

A. Conservation of energy B. Conservation of momentum C. Entropy maximization D. Conservation of mass

Q3: Which of the following expresses the first law of thermodynamics?

A. ΔQ = ΔW + ΔU B. ΔU = ΔQ + ΔW C. ΔU = ΔQ - ΔW D. ΔW = ΔQ + ΔU

Q4: The second law of thermodynamics states that entropy of an isolated system:

A. Always decreases B. Remains constant C. Always increases D. Becomes zero

Q5: Which law defines the concept of absolute zero temperature?

A. Zeroth Law B. First Law C. Second Law D. Third Law

Q6: What is the zeroth law of thermodynamics about?

A. Heat flow direction B. Entropy conservation C. Thermal equilibrium D. Conservation of mass

Q7: Which law forms the basis of the definition of temperature?

A. Zeroth Law B. First Law C. Second Law D. Third Law

Q8: The change in internal energy in a cyclic process is:

A. Positive B. Negative C. Zero D. Depends on heat and work

Q9: The efficiency of a Carnot engine depends on:

A. Working substance B. Temperature of source and sink C. Volume of gas D. Type of gas

Q10: Which process has no change in entropy?

A. Adiabatic reversible B. Isothermal irreversible C. Isobaric D. Isochoric

Q11: In which process is heat neither added nor removed?

A. Adiabatic B. Isothermal C. Isobaric D. Isochoric

Q12: Entropy is a measure of:

A. Pressure B. Disorder C. Temperature D. Internal energy

Q13: According to the second law, which process is not possible?

A. Heat flow from cold to hot spontaneously B. Heat flow from hot to cold C. Isothermal expansion D. Adiabatic compression

Q14: Which thermodynamic law sets the direction of natural processes?

A. Zeroth B. First C. Second D. Third

Q15: Which engine has the highest efficiency theoretically?

A. Diesel engine B. Otto engine C. Carnot engine D. Stirling engine

Q16: The third law of thermodynamics implies entropy becomes zero at:

A. 0°C B. 100K C. Room temperature D. 0K

Q17: In a reversible process, entropy change of the universe is:

A. Positive B. Negative C. Zero D. Maximum

Q18: The heat death of the universe is linked to which thermodynamic law?

A. Zeroth Law B. First Law C. Second Law D. Third Law

Q19: Which of the following is a state function?

A. Work B. Heat C. Entropy D. Path

Q20: The concept of perpetual motion machine of the second kind violates:

A. Zeroth Law B. First Law C. Second Law D. Third Law