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 and Kr; 1 g of activated charcoal adsorbs more of Kr Reason R: The

Question

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 and Kr; 1 g of activated charcoal adsorbs more of Kr Reason R: The critical volume Vc (cm3 mol–1) and critical pressure Pc (atm) is highest for Krypton but the compressibility factor at critical point Zc is lowest for Krypton. In the light of the above statements, choose the correct answer from the options given below

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

Prashant Kotian · Accepted Answer

Correct answer: D. Since Kr has maximum moles mass it has more Vander waal forces so critical temperature is high & gas having more critical temperature is more adsorbed on activated charcoal. At critical points compressibility facto Z is same for all gases. | JEE(Main) 2023 | DATE : 01-02-2023 (SHIFT-1) | PAPER-1 | OFFICIAL PAPER | CHEMISTRY PAGE # 7

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