Nessler's reagent is added to concentrated ammonium salt. What is the colour of the precipitate formed?

Brown

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Purple

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Orange

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Pink

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Solution

The correct option is A
Brown

Nessler's reagent is an aqueous solution of potassium iodide, mercuric chloride, and potassium hydroxide. It is used as a test to prove the presence of ammonium salts. A brown colour precipitate is formed when Nessler's reagent is added to concentrated ammonium salts. This brown precipitate is an indication that a given salt is an ammonium salt.

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