Applied Thermodynamics (3161910) MCQs

MCQs of Refrigerant and Refrigeration Cycles

Showing 1 to 10 out of 65 Questions
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1.
Pick up the wrong statement. A refrigerant should have
(a) low specific heat of liquid
(b) high boiling point
(c) high latent heat of vaporization
(d) higher critical temperature
Answer:

Option (b)

2.
The refrigerant for a refrigerator should have
(a) high sensible heat
(b) high total heat
(c) high latent heat
(d) low latent heat
Answer:

Option (c)

3.
Freon group of refrigerants are
(a) inflammable
(b) toxic
(c) non-toxic and inflammable
(d) non-toxic and non-inflammable
Answer:

Option (c)

4.
Ammonia is
(a) non-inflammable
(b) non-toxic
(c) toxic and non-inflammable
(d) toxic and inflammable
Answer:

Option (d)

5.
Chemical formula of Freon-12 is
(a) CCl2F2
(b) CCl2F3
(c) CCl3F2
(d) CCl3F3
Answer:

Option (a)

6.
Which of the following refrigerant has the maximum ozone depletion potential in the stratosphere?
(a) Ammonia
(b) Carbon dioxide
(c) Sulphur dioxide
(d) Fluorine
Answer:

Option (d)

7.

Carbon dioxide is

(a)

colourless
(b)

odourless
(c)

non-flammable
(d)

all of the mentioned
Answer:

Option (d)

8.
Which of the following is not a desirable property of a refrigerant?
(a) High risibility with oil
(b) Low boiling point
(c) Good electrical conductor
(d) Large latent heat
Answer:

Option (c)

9.
The freon group of refrigerants are
(a) halo-carbon refrigerants
(b) azeotrope refrigerants
(c) inorganic refrigerants
(d) hydro-carbon refrigerants
Answer:

Option (a)

10.
Which of the following is an azeotrope refrigerant?
(a) R-11
(b) R-40
(c) R-114
(d) R-502
Answer:

Option (d)

Showing 1 to 10 out of 65 Questions
1 2 3 4 5 6