KTGEasy
Question
If one mole of a monoatomic gas (γ = 5 / 3 ) is mixed with one mole of a diatomic gas (γ = 7 / 5 ), the value of γ for the mixture is
Options
A.1.40
B.1.50
C.1.53
D.3.07
Solution
means gas is monoatomic or 
means gas is diatomic or 
CV (of the mixture)
CP (of the mixture) = CV + R = 3R
∴ γmixture =
= 1.5∴ Correct option is (b).
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