Ammonia and red hot \( \mathrm{CuO} \) react to produce : (a) \( \mathrm{Cu}_{2} \mathrm{O}, \ma...

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Ammonia and red hot \( \mathrm{CuO} \) react to produce :
(a) \( \mathrm{Cu}_{2} \mathrm{O}, \mathrm{N}_{2}, \mathrm{H}_{2} \)
(b) \( \mathrm{Cu}, \mathrm{H}_{2} \mathrm{O}, \mathrm{N}_{2} \)
(c) \( \mathrm{Cu}(\mathrm{OH})_{2}, \mathrm{~N}_{2} \)
(d) \( \left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right](\mathrm{OH})_{2} \)
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