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MRAC
MRAC Set-1
Refrigerant and Insulation
20

Refrigerant and Insulation MCQ with Answers

20) Which substance absorbs heat and directly changes its state from solid to vapour?

Ice

Dry ice

Primary refrigerants

Secondary refrigerants

Answer is:

Dry ice

Refrigerant and Insulation MCQ with Answers

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Related Refrigerant and Insulation MCQ with Answers

21) Which is the effective method for refrigerant recovery?

Condensing unit

Charge migration

Push pull recovery

Use of system's compressor

Answer is:

Push pull recovery

22) How numerical designations of inorganic refrigerants are assigned?

Divide 700 to molecular mass of compound

Multiply 700 to molecular mass of compound

Adding 700 to molecular mass of compound

Subtracting 700 from molecular mass of compound

Answer is:

Adding 700 to molecular mass of compound

23) How many hydrogen atoms are present in R 134a?

One

Two

Four

Three

Answer is:

Two

24) Which refrigerant is used in vapour compression cycle?

Secondary refrigerant

Primary refrigerant

Brine solution

Water

Answer is:

Primary refrigerant

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