Engineering Thermodynamics
When a gas is heated at constant pressure

Its temperature will increase
Both temperature and volume will increase
Neither temperature not volume will increase
Its volume will increase

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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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