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MRAC
MRAC Set-1
Refrigerant and Insulation
19

Refrigerant and Insulation MCQ with Answers

19) What does the number 4 of R 134a indicate?

Number of hydrogen atoms

Number of chlorine atoms

Number of carbon atoms

Number of fluorine atoms

Answer is:

Number of fluorine atoms

Refrigerant and Insulation MCQ with Answers

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Related 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

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

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