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Assertion (A) : Large cold storage plants use ammonia as refrigerant while domestic refrigerators use chlorofluorocarbons. Reason (R) : Ammonia can be liquified at ambient temperatures at low pressures.

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(a)

Both A and R are true, and R is the correct explanation of A

(b)

Both A and R are true, but R is not a correct explanation of A

(c)

A is true, but R is false

(d)

A is false, but R is true

Answer:

Assertion (A) : Large cold storage plants use ammonia as refrigerant while domestic refrigerators use chlorofluorocarbons. Reason (R) : Ammonia can be liquified at ambient temperatures at low pressures.

Explanation