Explore topic-wise MCQs in Refrigeration.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Refrigeration knowledge and support exam preparation. Choose a topic below to get started.

1.

A refrigerant should have a low latent heat of vaporization at the evaporator temperature.

A. True
B. False
Answer» C.
Discussion
2.

R – 11 is having the highest C.O.P for refrigeration system working under the temperature limits of -15°C and 30°C as evaporator and condenser temperature respectively.

A. False
B. True
Answer» C.
Discussion
3.

Among the following refrigerants, which is having the lowest C.O.P for refrigeration system working under the temperature limits of -15°C and 30°C as evaporator and condenser temperature respectively?

A. Ammonia
B. R – 12
C. R – 30
D. Carbon dioxide
Answer» D. Carbon dioxide
Discussion
4.

Among the following refrigerants, which is having the lowest boiling point?

A. Ammonia
B. R – 12
C. Carbon dioxide
D. Sulphur dioxide
Answer» D. Sulphur dioxide
Discussion
5.

What is the refrigerant number of Water?

A. R – 717
B. R – 744
C. R – 118
D. R – 100
Answer» D. R – 100
Discussion
6.

What is the freezing point of R – 12 at atmospheric pressure?

A. -86.6°C
B. -73.6°C
C. -157.5°C
D. -160°C
Answer» D. -160°C
Discussion
7.

What is the boiling point of Carbon dioxide at atmospheric pressure?

A. -20.5°C
B. -73.6°C
C. -50°C
D. -68°C
Answer» C. -50°C
Discussion
8.

R – 717 is the refrigerant number of which of the following refrigerant?

A. Ammonia
B. Water
C. Carbon dioxide
D. Sulphur dioxide
Answer» B. Water
Discussion
9.

What is the boiling point of Ammonia at atmospheric pressure?

A. -10.5°C
B. -30°C
C. -33.3°C
D. -77.7°C
Answer» D. -77.7°C
Discussion
10.

Among the following refrigerants, which is having the lowest freezing point?

A. R – 21
B. R – 11
C. R – 12
D. R – 22
Answer» E.
Discussion