A chloride which forms a precipitate that is soluble in excess of ammonium hydroxide, is

Calcium chloride

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Ferrous chloride

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Ferric chloride

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Copper chloride

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Solution

The correct option is D Copper chloride
Copper chloride forms a precipitate that is soluble in excess of ammonium hydroxide.
$C u C l_{2} + 2 N H_{4} O H \to C u (O H)_{2} ↓ + 2 N H_{4} C l$
$C u (O H)_{2} + 4 N H_{4} O H (excess) \to [C u (N H_{3})_{4}] (O H)_{2} Cuprammine hydroxide (water soluble) + 4 H_{2} O$

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