In a working refrigerator, the value of COP is always__________________?

Related Mcqs:

The energy of activation of exothermic reaction is_________________?

A. Zero B. Negative C. Very large compared to that for endothermic reaction D. Not possible to predict...

During a reversible isothermal expansion of an ideal gas, the entropy change is___________________?

A. +ve B. 0 C. -ve D. ∞...

In case of vapour compression refrigeration system, elevating the evaporator temperature (keeping the condenser temperature constant) results in_____________?

A. Enhanced COP B. Decreased COP C. No change in the value of COP D. Increased or decreased COP; depending upon the type of refrigerant...

The theoretical minimum work required to separate one mole of a liquid mixture at 1 atm, containing 50 mole % each of n- heptane and n- octane into pure compounds each at 1 atm is__________________?

A. -2 RT ln 0.5 B. -RT ln 0.5 C. 0.5 RT D. 2 RT...

Degree of freedom of a system consisting of a gaseous mixture of H2 and NH3 will be_________________?

A. 0 B. 1 C. 2 D. 3...