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Chemistry S and P - Block Elements (S - Block Elements Not In Syllabus ) Mix Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 12, 2026

N2 from a mixture of N2 and CO

NH4Cl from a mixture of NH4Cl and KCl

Nitrogen from a mixture of N2 and O2

NH3 from a mixture of N2 and NH3 (e) PH3 from a mixture of PH3 and NH3 (f) N2 from a mixture of N2 and CO2

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Sol. By bubbling through ammoniacal cuprous chloride in which CO is absorbed but not N2.

By sublimation, NH4Cl sublimes leaving KCl as residue.

By bubbling through alkaline solution of pyrogallol in which oxygen is absorbed but not N2.

By bubbling through H2SO4 when NH3 is absorbed but not N2. Ammonia is recovered by heating the solution of (NH4)2SO4 with excess of NaOH.

(e) By bubbling through water in which NH3 dissolves but not PH3 .

(f) By bubbling through water under high pressure of through NaOH solution in which CO2 dissolves but not N2 .

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