Verified Solution • 2025–26 Session moderate

QJEEM23Ch8f71: JEE Main 2023 Chemistry - Class 12 JEEM23Ch8f71 Solution: Given below are two statements: One is labelled as Assertion A…

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R

Assertion A: Amongst He,Ne,Ar\mathrm{He}, \mathrm{Ne}, \mathrm{Ar} and Kr\mathrm{Kr} ; 1 g\mathrm{g} of activated charcoal adsorbs more of Kr\mathrm{Kr} .

Reason R: The critical volume Vc(cm3 mol−1)\mathrm{V}_{\mathrm{c}}\left(\mathrm{cm}^{3} \mathrm{~mol}^{-1}\right) and critical pressure Pc\mathrm{P}_{\mathrm{c}} (atm) is highest for Krypton but the compressibility factor at critical point Zc\mathrm{Z}_{\mathrm{c}} is lowest for Krypton.

In the light of the above statements, choose the correct answer from the options given below

Multiple Choice Options

  • A Both A and R are true and R is the correct explanation of A
  • B A is false but R is true
  • C Both A and R are true but R is NOT the correct explanation of A
  • D A is true but R is false

Step-by-Step Verified Solution

MW order, \mathrm{Kr}>\mathrm{Ar}>\mathrm{Ne}>\mathrm{He}

ZZ (at critical point) =38=\frac{3}{8}

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