Question

The compound used as refrigerant is:
(A) Westron
(B) Hydrogen peroxide
(C) Gammaxane
(D) Freon

Answer 1

A refrigerant must have a low boiling point and high latent heat of vaporization. A non-toxic nonflammable chemical having low boiling point is a good candidate for refrigerant.

Step by step answer: Westron has chemical formula ${\text{CHC}}{{\text{l}}_{\text{2}}} \cdot {\text{CHC}}{{\text{l}}_{\text{2}}}$ . It is an industrial solvent for rubber, fats and varnishes. It is an insecticide.
Hydrogen peroxide has mild antiseptic properties.
Gammaxane is an agricultural insecticide. It is used as a pharmaceutical treatment for lice and scabies.
A refrigerant has applications in the heat pump and refrigeration cycles. Generally, a fluid is used as a refrigerant. During the refrigeration cycle, the phase of refrigerant changes from liquid to vapor and back to liquid.
Fluorocarbons such as chlorofluorocarbons, ammonia, Sulphur dioxide and non-halogenated hydrocarbons (for example propane) are used as refrigerants. Nowadays, due to the problem of ozone depletion, fluorocarbon use is avoided.
Dupont has registered a trade name, ‘Freon’. Freon refers to a large number of halocarbon compounds.
Freons are thermally stable. They are nonflammable and have moderate toxicity. They are either gases or liquids. They are used as refrigerants and aerosol propellants.
Most simple Freon is difluoro dichloromethane with chemical formula ${\text{CC}}{{\text{l}}_{\text{2}}}{{\text{F}}_{\text{2}}}$
Thus, the compound used as refrigerant is Freon

Hence, the correct option is the option (D).

Note: During refrigeration, heat energy is transferred from cooler area to hotter area, this heat flow is against the natural heat flow. Natural heat flow is from hotter areas to cooler areas.