Kinetic Theory - Result Question 35
35. If for a gas, $\frac{R}{C_v}=0.67$, the gas is made up of molecules which are
[1992]
(a) diatomic
(b) mixture of diatomic and polyatomic molecules (c) monoatomic
(d) polyatomic
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Answer:
Correct Answer: 35. (c)
Solution:
- (c) Since $\frac{R}{C_V}=0.67 \Rightarrow C_V=\frac{3}{2} R$, hence gas is monoatomic. For a gas having $f$ degree of freedom specific heat at constant volume, $C_v=\frac{1}{2} f R$ specific heat at constant pressure,
$ C_p=(\frac{f}{2}+1) R $
where, $R=$ universal gas constant
