Question

The cooling in refrigerator is due to:
A. reaction of the refrigerator gas
B. expansion of ice
C. the expansion of the gas in the refrigerator
D. the work of the compressor

Answer 1

Hint: There are some few specific components in the refrigerator involved in the process of changing temperature of the specific equipment. The most important component which is present in the refrigerator is the compressor which helps in changing the temperature of the machine due to the presence of refrigerant gas.

Complete answer
The cooling process of refrigeration is specific for the formation of ice due to the work done by the components of refrigeration. There are specific gases present in the compressor of the refrigerator which acts as the component that can convert the water in the refrigerator to ice and help in the process of storing the different materials. This stable temperature is attained during refrigeration as the temperature in the refrigerator falls due to the specific changes in the gases present inside the refrigerator. The freezing process mainly occurs under the action of the gases which are involved in reducing temperature. Since there is work done by the gas present in the compressor, the loss of heat takes place. This loss of heat causes the temperature to fall inside the refrigerator. This specific change causes the cooling in the refrigerator and it also proves that the compressor gas in the most important refrigerant. This condition is known as the Joule-Thomson effect due to which the expansion of gases takes place and hence the correct option is C. The expansion of the gas in the refrigerator.

Note
The refrigerator acts as a medium for the storage unit for various components, which includes food as well as laboratory samples. The refrigeration acts according to the type of refrigerant used by the compressor as it defines the faster rate in which cooling takes place.