engineering physics MCQ #2768

The molar specific heat of a gas at constant pressure (Cp) is greater than at constant volume (Cv) because

engineering physics MCQ #2768

  1. Question 1

    Q1. The molar specific heat of a gas at constant pressure (Cp) is greater than at constant volume (Cv) because

    • A) At constant pressure, the gas expands and does work
    • B) At constant volume, the gas is compressed
    • C) Cp includes the energy required to do work
    • D) Cv is always less than Cp

    Answer: Cp includes the energy required to do work

    Explanation: Cp > Cv because Cp includes the energy required to do work against external pressure, as per Cp = Cv + R.