When a salt treated with sodium hydroxide solution it gives gas X on passing gas X through reagent Y a brown coloured precipitate is formed. X and Y respectively, are [2025]

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Solution

Q.
When a salt treated with sodium hydroxide solution it gives gas X on passing gas X through reagent Y a brown coloured precipitate is formed. X and Y respectively, are [2025]

1 $X = {NH}_{4} Cl$ and $Y = KOH$

2 $X = {NH}_{3}$ and $Y = HgO$

3 $X = {NH}_{3}$ and $Y = K_{2} {HgI}_{4} + KOH$

4 $X = HCl$ and $Y = {NH}_{4} Cl$

Ans.
(3)

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