MEDIUM
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IMPORTANT
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Pressure versus temperature graph of two moles of Neon gas is as shown in figure. The ratio between heat absorbed and change in internal energy of gas in process 1-2 is

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Important Questions on Thermodynamics

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Work done by the system during expansion is _____.
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In summer, when the valve of a bicycle tube is opened, the escaping air appears cold. Why?

EASY
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State the sign conventions used in thermodynamic processes. 
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State Zeroth law of thermodynamics.
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What is thermodynamic system? Prove that the work-done by a thermodynamic system is equal to the area under P-V diagram.
HARD
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Write a short note on quasi-static process.

MEDIUM
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P-V diagram of a diatomic gas is a straight line passing through origin. The molar heat capacity of the gas in the process will be
EASY
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Heat is supplied to a diatomic gas at constant pressure. The ratio of Δ Q  :  Δ U  :  Δ W  is