Assertion (A): Large cold storage plants use ammonia as refrigerant while domestic refrigerators use chloroflu

Question

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.

Accepted Answer

The Assertion is true because ammonia is highly efficient and cost effective for large scale industrial cooling, whereas chlorofluorocarbons or their modern alternatives are safer and more stable for small scale domestic use.

The Reason is also true and explains the Assertion. Ammonia has excellent thermodynamic properties, including a high latent heat of vaporization, and it can be liquefied at ambient temperatures under relatively low pressure. This makes it ideal for large plants where the infrastructure can safely handle its toxicity and flammability. In domestic settings, safety is the priority, which is why non toxic refrigerants are used despite being less efficient than ammonia. Therefore, both statements are true and the Reason explains why ammonia is a preferred choice for large scale industrial applications.

Answer

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

Answer

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

Answer

A is true, but R is false

Answer

A is false, but R is true

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

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