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Molar specific heats and gamma of monoatomic, diatomic and polyatomic gases

This type of question, asked 9 times: 4 May 2023 S1, 10 May 2023 S2, 11 May 2024 S2, 12 May 2024 S1, 19 Apr 2025 S1, 11 Apr 2026 S2, 13 Apr 2026 S2, 12 May 2026 S2, 19 May 2026 S1. All 10 questions below, oldest first.

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  1. Question 1

    4 May 2023 S1

    1
    According to the law of equipartition of energy, the molar specific heat of a diatomic gas at constant volume where the molecule has one additional vibrational mode is

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  2. Question 2

    10 May 2023 S2

    19
    For a gas, RCv=0.4\frac{R}{C_v} = 0.4 where R is the universal gas constant and 'CvC_v' is molar specific heat at constant volume. The gas is made up of molecules which are

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  3. Question 3

    11 May 2024 S2

    23
    For a gas, RCv=0.4\frac{R}{C_v} = 0.4, where R is universal gas constant and CvC_v is molar specific heat at constant volume. The gas is made up of molecules which are

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  4. Question 4

    12 May 2024 S1

    2
    Let γ1\gamma_{1} be the ratio of molar specific heat at constant pressure and molar specific heat at constant volume of a monoatomic gas and γ2\gamma_{2} be the similar ratio of diatomic gas. Considering the diatomic gas molecule as a rigid rotator, the ratio γ2γ1\frac{\gamma_{2}}{\gamma_{1}} is

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  5. Question 5

    19 Apr 2025 S1

    35
    For ideal non-rigid diatomic gas, the value of RCv\frac{R}{C_{v}} is nearly (γ=CPCv=97)\left( \gamma=\frac{C_{P}}{C_{v}}=\frac{9}{7} \right)

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  6. Question 6

    11 Apr 2026 S2

    117
    For a gas, RCv=0.4\dfrac{R}{C_v} = 0.4 where R is the universal gas constant and CvC_v is the molar specific heat at constant volume. The gas is made up of molecules which are

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  7. Question 7

    13 Apr 2026 S2

    117
    According to law of equipartition of energy the molar specific heat of a non rigid diatomic gas at constant volume is

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  8. Question 8

    13 Apr 2026 S2

    118
    Let γ1\gamma_1 be the ratio of molar specific heat at constant pressure and molar specific heat at constant volume of a mono-atomic gas and γ2\gamma_2 be the similar ratio of diatomic gas. Considering the diatomic gas molecule as a rigid rotator, the ratio, γ1/γ2\gamma_1/\gamma_2 is

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  9. Question 9

    12 May 2026 S2

    116
    The ratio of CpC_p to CvC_v for a non-rigid diatomic gas is

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  10. Question 10

    19 May 2026 S1

    117
    The molar specific heat at constant pressure of an ideal gas is 72R\dfrac{7}{2}R. The gas is made up of molecules which are

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