Multiple Choice Questions on Thermodynamics

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Which law of thermodynamics deals with the concept of entropy?
    A) Zeroth Law
      B) First Law
        C) Second Law
          D) Third Law
            Answer: C) Second Law

              What does the first law of thermodynamics state?
                A) Energy cannot be created nor destroyed.
                  B) Entropy of an isolated system remains constant.
                    C) Heat always flows from a hotter object to a colder one.
                      D) Energy can be converted from one form to another.
                        Answer: A) Energy cannot be created nor destroyed.

                          Which type of process occurs at constant volume?
                            A) Isothermal
                              B) Isobaric
                                C) Adiabatic
                                  D) Isochoric
                                    Answer: D) Isochoric

                                    What is the maximum efficiency possible for a heat engine working between two temperatures according to the Carnot cycle?

                                    A) 50%
                                    B) 100%
                                    C) It depends on the type of fuel used.
                                    D) Determined by the size of the engine.
                                    Answer: B) 100%

                                    Which law of thermodynamics introduces the concept of temperature?

                                    A) Zeroth Law
                                    B) First Law
                                    C) Second Law
                                    D) Third Law
                                    Answer: A) Zeroth Law

                                    In a closed system, what quantities remain constant during a process if no heat is exchanged with the surroundings?

                                    A) Pressure
                                    B) Internal energy
                                    C) Volume
                                    D) Temperature
                                    Answer: B) Internal energy

                                    Entropy is a measure of:

                                    A) Disorder or randomness
                                    B) Total energy of a system
                                    C) Available work in a system
                                    D) Heat content of a system
                                    Answer: A) Disorder or randomness

                                    Which type of thermodynamic system allows both energy and matter exchange with the surroundings?
                                    A) Closed system
                                    B) Isolated system
                                    C) Open system
                                    D) Adiabatic system
                                    Answer: C) Open system

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