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Practice Thermodyanmics for JEE Main, JEE Advanced, NEET, and Classes 11–12. Attempt each question, then open it for the full solution.
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- MCQeasyThermodyanmics
Let γ₁ be the ratio of molar specific heat at constant pressure and molar specific heat at constant volume of a monoatomic gas and γ₂ be the similar ratio of diatomic gas. Considering the diatomic gas molecule as a rigid rotator, the ratio, γ₁/γ₂ is
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JEE Mains24 January 2023Shift 2Evening Shift
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The temperature of a gas having 2.0 × 10²⁵ molecules per cubic meter at 1.38 atm (Given, k = 1.38 × 10⁻²³ JK⁻¹) is :
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JEE Mains 2024 29 Jan Evening Shift
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Two vessels contain the same ideal gas. The larger vessel has twice the volume of the smaller one and contains gas at 8 kPa and 1000 K. The smaller vessel contains gas at 7 kPa and 500 K. The vessels are connected and both are maintained at 600 K. The final common pressure is:
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JEE Mains 2025 4 April Evening Shift
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If the root mean square velocity of hydrogen molecule at a given temperature and pressure is 2 km/s, the root mean square velocity of oxygen at the same condition in km/s is:
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JEE Mains 2024 01 Feb Evening Shift
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The total kinetic energy of 1 mole of oxygen at 27°C is : [Use universal gas constant (R)= 8.31 J/mole K]
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JEE Mains 2024 27 Jan Evening Shift
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10 mole of oxygen is heated at constant volume from 30°C to 40°C. The change in the internal energy of the gas is _______ cal. (The molecular specific heat of oxygen at constant pressure, Cₚ = 7 cal.·mol⁻¹·°C⁻¹ and R = 2 cal.·mol⁻¹·°C⁻¹.)
JEE Mains 202621 January Morning Shift
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One ideal gas sample contains n₁ moles at pressure P₁, volume V₁ and temperature T₁. A second ideal gas sample contains n₂ moles at pressure P₂, volume V₂ and temperature T₂. They are mixed, and the final mixture has pressure P, volume V and temperature T. Assuming ideal-gas behaviour, which expression gives T?
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JEE Mains 2026 4 April Morning Shift
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Helium and argon gases are at the same temperature, 300 K. The ratio of their average kinetic energies per molecule is:
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JEE Mains 2025 7 April Evening Shift
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According to law of equipartition of energy the molar specific heat of a diatomic gas at constant volume where the molecule has one additional vibrational mode is :-
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JEE Mains25 January 2023Shift 2Evening Shift
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A cylindrical tube AB of length l, closed at both ends contains an ideal gas of 1 mol having molecular weight M. The tube is rotated in a horizontal plane with constant angular velocity ω about an axis perpendicular to AB and passing through the edge at end A, as shown in the figure. If PA and PB are the pressures at A and B respectively, then (Consider the temperature is same at all points in the tube)

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JEE Mains 202622 January Morning Shift
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