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Question: Answered & Verified by Expert
Assertion : Liquid \(\mathrm{NH}_3\) is used for refrigeration.
Reason : Liquid \(\mathrm{NH}_3\) quickly vapourises.
Chemistryp Block Elements (Group 15, 16, 17 & 18)AIIMSAIIMS 2008
Options:
  • A If both assertion and reason are true and reason is the correct explanation of assertion.
  • B If both assertion and reason are true but reason is not the correct explanation of assertion.
  • C If assertion is true but reason is false.
  • D If both assertion and reason are false.
Solution:
2788 Upvotes Verified Answer
The correct answer is: If both assertion and reason are true and reason is the correct explanation of assertion.
Liq. $\mathrm{NH}_3$ has high heat of vaporisation (327 $\mathrm{cal} / \mathrm{g})$. So, it takes up lots of heat and helps in cooling. So, it is used in ice-plants.

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