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Refrigerants Basics Quiz Questions 1

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Refrigerants Quiz Questions Answers Practice Test

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Question 1 of 15

1. Question
1 points
Most of the refrigeration gases are heavier than air
- True
- False
Correct

Incorrect
Question 2 of 15

2. Question
1 points
The CFC and HCFC refrigerants were:
- non toxic and non flammable
- toxic and non flammable
- non toxic and flammable
- toxic and flammable
Correct

Incorrect
Question 3 of 15

3. Question
1 points
Freezing point of the refrigerant should be well above the expected evaporator temperature
- True
- False
Correct

Incorrect
Question 4 of 15

4. Question
1 points
Refrigerant should have which of the following properties:
- higher critical pressure and higher critical temperature
- lower critical pressure and lower critical temperature
- higher critical pressure and lower critical temperature
- lower critical pressure and higher critical temperature
Correct

Incorrect
Question 5 of 15

5. Question
1 points
R-410a is the best replacement for R-22 refrigerant
- True
- False
Correct

Incorrect
Question 6 of 15

6. Question
1 points
As per ASHRAE which of the following refrigerant class has high flammability:
- Class A
- Class 1
- Class 2
- Class 3
Correct

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Question 7 of 15

7. Question
1 points
Thermodynamic performance of simple CO2 cycle is _____ than HFCs
- 30 to 50% lower
- 30 to 50% higher
- 60 to 80% lower
- 60 to 80% higher
Correct

Incorrect
Question 8 of 15

8. Question
1 points
Refrigerants should have _____ dielectric strength
- high
- low
Correct

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Question 9 of 15

9. Question
1 points
HFC refrigerant can cause which of the following:
- Global warming
- Ozone depletion potential
- Both the options are correct
Correct

Incorrect
Question 10 of 15

10. Question
1 points
Refrigerants are desired to have ____ freezing point:
- Low
- High
Correct

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Question 11 of 15

11. Question
1 points
_____ blends behave as a single substance refrigerants in the evaporating and condensing process:
- Azeotropic
- Zeotropic
- both Azeotropic and Zeotropic
Correct

Incorrect
Question 12 of 15

12. Question
1 points
The Ozone depletion potential (ODP) of R-22 is _____ of R-11 refrigerant:
- 5%
- 50%
- 25%
- 75%
Correct

Incorrect
Question 13 of 15

13. Question
1 points
Which of the following refrigerants have greater stability in lower parts of the atmosphere:
- CFCs
- HCFCs
- HFCs
- All the options are correct
Correct

Incorrect
Question 14 of 15

14. Question
1 points
Which of the following properties related to Ammonia refrigerant is correct:
- highly toxic and highly flammable
- less toxic and highly flammable
- highly toxic and less flammable
- less toxic and less flammable
Correct

Incorrect
Question 15 of 15

15. Question
1 points
Which of the following refrigerant have higher efficiency during longer run:
- R-410a
- R-407c
- both will have same level of efficiencies
Correct

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