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JEE CHEMISTRY MCQ: STATES OF MATTER

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Analyzing +4 | -1
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;1g\mathrm{Kr} ; 1\mathrm{g} of activated charcoal adsorbs more of Kr\mathrm{Kr}.
Reason R: The critical volume Vc(cm3 mol–1)\mathrm{V_c(cm^3 \,mol^{–1}}) and critical pressure PcP_c (atm) is highest for Krypton but the compressibility factor at critical point ZcZ_c is lowest for Krypton.
In the light of the above statements, choose the correct answer from the options given below.
View answer and explanation
Correct option: B
A is true but R is false
The correct answer is B (A is true but R is false) because while Kr is adsorbed more, the given reason about critical volume, pressure, and compressibility factor is incorrect.

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