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For a gas R/CV = 0.4, where R is the uni...

For a gas `R/C_V` = 0.4, where R is the universal gas constant and C, is molar specific heat at constant volume. The gas is made up of molecules which are

A

rigid diatomic

B

monoatomic

C

non-rigid diatomic

D

polyatomic

Text Solution

Verified by Experts

The correct Answer is:
D
According to question,
`R/C_V=0.4` [R= universal gas constant and `C_V`=molar specific heat at constant volume]
As we know, `C_P -C_V = R`
So, (C_P-C_V)/C_V=0.4 Rightarrow C_P/C_V=0.4+1=1.4`
i.e. Y=1.4
As Y = 1.4 ,the gas is diatomic in nature.
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Knowledge Check

  • Value of universal gas constant (R) is

    A
    `8.31 J mol^(-1) K^(-1)`
    B
    `8.0 J mol^(-1) K^(-1)`
    C
    `6.67 J mol^(-1) K^(-1)`
    D
    `3.45 J mol^(-1) K^(-1)`.

  • Universal gas constant 'R' depends on

    A
    Volume of gas
    B
    Temperature of gas
    C
    Number of moles of gas
    D
    None of these

  • The molar specific heat at constant pressure of an ideal gas is 7/2R . The gas is made up of molecules which are

    A
    Monoatomic
    B
    Diatomic
    C
    Triatomic
    D
    Polyatomic

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