Engineering Thermodynamics
In an extensive property of a thermodynamic system

Extensive work is done
Extensive heat is transferred
Extensive energy is utilized
None of the listed here

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Engineering Thermodynamics
According to Clausius statement of second law of thermodynamics

Heat can be transferred from low temperature to high temperature source if COP of process is more than unity
Heat can
Heat can
Heat can be transferred for low temperature to high temperature source by using refrigeration cycle

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