Refrigerants - MCQs with Answers

Refrigerants - MCQs with Answers

Q1. When two refrigerating cycles are used in series with two different refrigerants, the system is known as

a. dual refrigeration system
b. cascade refrigeration system
c. vapour absorption refrigeration system
d. none of the above

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Q2. What is the desirable characteristics of a refrigerant?

a. it should not be toxic
b. it should not be non-corrosive
c. it should have minimum enthalpy of vaporization
d. all of the above

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Q3. Which refrigerant is widely used in refrigeration facilities of food as cooling of fresh vegetables, dairy products, meat and fish and similar process industries?

a. sulphur dioxide
b. ethyl chloride
c. propane
d. ammonia

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Q4. What is the disadvantage of ammonia using as a refrigerant?

a. ammonia cannot be detected in case of leakage
b. ammonia has a bad effect on ozone layer
c. ammonia is toxic in nature
d. ammonia has higher energy cost

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