Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
AIIMS 2008
Exam
AIIMS
Year
2008
Subject
Chemistry
Chapter
p Block Elements (Group 15, 16, 17 & 18)

AIIMS 2008 · Chemistry · p Block Elements (Group 15, 16, 17 & 18)

Assertion : Liquid (NH_3) is used for refrigeration. Reason :...

Assertion : Liquid (\mathrm{NH}_3) is used for refrigeration. Reason : Liquid (\mathrm{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. NH3\mathrm{NH}_3 has high heat of vaporisation (327 cal/g)\mathrm{cal} / \mathrm{g}). So, it takes up lots of heat and helps in cooling. So, it is used in ice-plants.
Practice p Block Elements (Group 15, 16, 17 & 18) on Quantrex Academy →

More from p Block Elements (Group 15, 16, 17 & 18)

Identify the incorrect statement from the following : NEET 2026Given below are two statements: Statement-I : Heating NaCl with concentrated H _2 SO _4… NEET 2026Given below are two statements: Statement I : Like nitrogen that can form ammonia… NEET 2025Match List - I with List-II List-I List-II A. XeO_3 I. sp^3 d, linear B. XeF_2 II. sp^3… NEET 2025Among Group 16 elements, which one does NOT show -2 oxidation state? NEET 2024Identify the incorrect statement. NEET 2024The products A and B obtained in the following reactions, respectively, are aligned & 3… NEET 2024Given below are two statements: Statement I: The boiling point of hydrides of Group 16… NEET 2024 Full p Block Elements (Group 15, 16, 17 & 18) list All AIIMS PYQs