Which of the following is a widely used refrigerant in vapour compression refrigeration system (using large centrifugal compressor) ?

Related Mcqs:

Pick out the correct statement?

A. Like internal energy and enthalpy, the absolute value of standard entropy for elementary substances is zero B. Melting of ice involves increase in enthalpy and a decrease in randomness C. The internal energy of an ideal gas depends only on its pressure D. Maximum work is done under reversible conditions...

What is the degree of freedom for a system comprising liquid water equilibrium with its vapour ?

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

When dilute aqueous solutions of two salts are mixed, the process is associated with ___________________?

A. Decrease in temperature B. Increase in temperature C. No change in temperature D. Change in temperature which is a function of composition...

The intensive properties are_____________?

A. Molar volume, density, viscosity and boiling point B. Refractive index and surface tension C. Both A. and B D. None of these...

For an exothermic reaction ____________________?

A. Only enthalpy change (ΔH) is negative B. Only internal energy change (ΔE) is negative C. Both ΔH and ΔE are negative D. Enthalpy change is zero...