If for a gas, $\frac{R}{C_{V}}=0.67$, this gas is made up of molecules which are\

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Professor PC Thomas Classes · Answer

(c) : Since $\frac{R}{C_{V}}=0.67 \Rightarrow \frac{C_{P}-C_{V}}{C_{V}}=0.67$\ $\Rightarrow \gamma=1.67=\frac{5}{3}$ Hence gas is monoatomic.\