A) \[CuS{{O}_{4}}\] reacts with \[KCl\] in aqueous solution to give \[C{{u}_{2}}C{{l}_{2}}\].
B) \[CuS{{O}_{4}}\]reacts with KI in aqueous solution to give \[C{{u}_{2}}{{I}_{2}}\].
C) \[CuS{{O}_{4}}\] react with \[NaOH\] and glucose in aqueous medium to give \[C{{u}_{2}}O\].
D) \[CuS{{O}_{4}}\] on strong heating gives CuO.
Correct Answer: A
Solution :
[a] \[2CuS{{O}_{4}}+4KI\to C{{u}_{2}}{{I}_{2}}+2{{K}_{2}}S{{O}_{4}}+{{I}_{2}}\] (not given by KCl). Fehling solution gives \[C{{u}_{2}}O\] with reducing substances \[CuS{{O}_{4}}\xrightarrow[\Delta ]{strong}CuO+S{{O}_{3}}\]
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