the precipitate of an cation that does not dissolve neither in excess NAOH nor in NH4OH
options are
Fe²+
Pb²+
Cu²+
all of the above
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Explanation:
द प्रिपरेशन ऑफ एन ओ एस कंटेनर्स फॉर ईच ऑफ द बॉस
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