State True or False.
$H g_{2} C l_{2}$ reacts with ammonia to form insoluble $H g N H_{2} C l$ and Hg.

True

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False

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Solution

The correct option is A True
The given statement is True.
$H g_{2} C l_{2}$ reacts with ammonia to form insoluble $H g N H_{2} C l$ and Hg (finely divided). The solution turns black.
$H g_{2} C l_{2} + 2 N H_{3} \to [H g + H g (N H_{2}) C l] ↓ + N H_{4} C l$

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