A) \[C{{u}_{2}}O\]
B) Cu
C) \[C{{u}_{3}}O\]
D) \[CuO\]
Correct Answer: A
Solution :
Fehling's solution is reduced by aldehydes and a red precipitate of \[C{{u}_{2}}O\]is obtained. \[\underset{\text{ethanal}}{\mathop{C{{H}_{3}}CHO}}\,+\underset{\begin{smallmatrix} (From\,Fehling\, \\ solution) \end{smallmatrix}}{\mathop{2CuO}}\,\xrightarrow[{}]{{}}C{{H}_{3}}COOH+\underset{red\,ppt.}{\mathop{C{{u}_{2}}O}}\,\downarrow \]
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