Thermodynamics

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97 of 190

Question 97 of 190

The thermodynamic process, in which internal energy of the system remains constant is

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Answer: (C) Isothermal

An isothermal process is a thermodynamic process in which the temperature of a system remains constant. The transfer of heat into or out of the system happens so slowly that thermal equilibrium is maintained.
ΔT=0,ΔU=nCV∆T=0\Delta T=0,\Delta U=n{C}_{V}∆T=0.
According to first law of thermodynamics,
∆Q=∆U+∆W⇒∆Q=∆W∆Q=∆U+∆W \Rightarrow ∆Q=∆W

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