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Which is not a state variable/function in the given options according to thermodynamics?

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Which is not a state variable/function in the given options according to thermodynamics?

(a) Temperature

(b) Enthalpy

(c) Functions dependent on path

(d) Internal energy

I had been asked this question during an interview.

My query is from A Brief Review of Thermodynamics topic in division Compressible Flow – Preliminary Aspects of Aerodynamics

1 Answer

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Best answer
Correct option is (c) Functions dependent on path

Easiest explanation: By definition, state functions do not depend on the path and only depend on the initial and final state of the gas. Temperature, enthalpy and internal energy are all path independent i.e. state functions.

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