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NEET2008Chemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Assertion : Liquid ( NH ₃ ) is used for refrigeration. Reason : Liquid ( NH ₃ ) quickly vapourises.

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of assertion.
  2. BIf both assertion and reason are true but reason is not the correct explanation of assertion.
  3. CIf assertion is true but reason is false.
  4. DIf both assertion and reason are false.

Correct answer

A. If both assertion and reason are true and reason is the correct explanation of assertion.

Step-by-step solution

Liq. NH ₃ has high heat of vaporisation (327 cal / g ) . So, it takes up lots of heat and helps in cooling. So, it is used in ice-plants.

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