Engineering Thermodynamics
The area under the temperature-entropy curve (T – s curve) of any thermodynamic process represents

None of the listed here
Heat absorbed
Either heat absorbed or heat rejected
Heat rejected

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Engineering Thermodynamics
Zeroth law of thermodynamics

Deals with heat engines
Deals with conversion of mass and energy
Deals with reversibility and irreversibility of process
States that if two systems are both in equilibrium with a third system, they are in thermal equilibrium with each other

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