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Mechanical Engineering · Q260

Refrigeration And Air Conditioning

Engineering and GATE · Mechanical Engineering · question 260

Q260

Which of the following refrigerant has the highest freezing point.

A.
Ammonia
B.
Carbon dioxide
C.
Sulphur dioxide
Answer
D.
R-12

Answer: Option C

Solution

Answer: Option C
Solution:
Sulphur dioxide has the highest freezing point.

Freezing point of Ammonia is −77.7 °C
Freezing point of Carbon dioxide is −78.5 °C
Freezing point of Sulphur dioxide is −72 °C
Freezing point of R-12 is −157.7 °C
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