A mixture of one mole of monoatomic gas and one mole of a diatomic gas (rigid) are kept at room temperature (27). The ratio of specific heat of gases at constant volume respectively is: (a) 3/2 (b) 3/5 (c) 7/5 (d) 5/3

Answer: (b). Monoatomic: CV = 3/2R; rigid diatomic: CV = 5/2R. Ratio = (3/2)/(5/2) = 3/5 So the answer is (b) 3/5.

A mixture of one mole of monoatomic gas and one mole of a diatomic… | JEE Main 2024 (8 Apr, Shift 1)

Q18JEE Main 2024 · 8 APR · SHIFT 1Medium

Specific Heats of Gases - Cp, Cv, γ & Mayer's Relation

A mixture of one mole of monoatomic gas and one mole of a diatomic gas (rigid) are kept at room temperature $(27^\circ\text{C})$ . The ratio of specific heat of gases at constant volume respectively is:

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Answer: (b)

Monoatomic: $C_V = \dfrac{3}{2}R$ ; rigid diatomic: $C_V = \dfrac{5}{2}R$ .
Ratio $= \dfrac{3/2}{5/2} = \dfrac{3}{5}$
So the answer is (b) $3/5$ .

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Specific Heats of Gases - Cp, Cv, γ & Mayer's Relation question from JEE Main 2024 (8 Apr, Shift 1)

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