When calomel reacts with \( \mathrm{NH}_{4} \mathrm{OH} \) solution the compound formed is: (a) ...

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When calomel reacts with \( \mathrm{NH}_{4} \mathrm{OH} \) solution the compound formed is:
(a) \( \mathrm{Hg}_{2} \mathrm{Cl}_{2} \)
(b) \( \mathrm{Hg}\left(\mathrm{NH}_{2}\right) \mathrm{Cl} \)
(c) \( \mathrm{Hg}\left(\mathrm{NH}_{3}\right)_{2} \mathrm{Cl} \)
(d) \( \mathrm{HgCl}_{2} \cdot \mathrm{NH}_{3} \)
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