Question

Modern refrigerators usually use a refrigerant called ______________

(a) HFC-134a

(b) CFC-134a

(c) HFC-1a

(d) HC-13a

This question was addressed to me in an interview.

This key question is from Heat Transfer Applications in section Heat Transfer Applications of Food Processing Unit Operations

Answer 1

Right answer is (a) HFC-134a

To elaborate: Modern refrigerators use a refrigerant called HFC-134a. IUPAC name of HFC-134a is 1,1,1,2-Tetrafluoroethane. This is generally accepted because of its nature, it does not deplete the ozone layer.