On passing a gas, ‘X’, through Nessler’s reagent, a brown precipitate is obtained. The gas ‘X’ is (A) H2S (B) CO2 (C) NH3 (D) Cl2

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Question

On passing a gas, ‘X’, through Nessler’s reagent, a brown precipitate is obtained. The gas ‘X’ is

(A) H2S
(B) CO2
(C) NH3
(D) Cl2

Prashant Kotian · Accepted Answer

Correct answer: C. Nessler’s Reagent Reaction :       4 2 Nessler's Reagent Iodine of Millon's base Brown precipitate 2K HgI NH 3KOH HgO. Hg NH I 7KI 2H O     

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