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  1. If for a gas, R/Cv = 0.67 , the gas is made up of molecules which are
    1. diatomic
    2. mixture of diatomic and polyatomic molecules
    3. monoatomic
    4. polyatomic
Correct Option: C

Since
R
= 0.67 ⇒ CV =
3
R, hence gas is monoatomic.
CV2



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