A) Ethanol
B) Methanal
C) Ethanal
D) Propanone
Correct Answer: C
Solution :
The compound which contains\[COC{{H}_{3}}\] group in its structure, gives positive iodoform test and the compound which contains\[CHO\] group gives positive Fehling test. In ethanal, \[C{{H}_{3}}CHO\] both the groups are present, hence it responds to both iodoform test and Fehling's test. \[C{{H}_{3}}CHO+{{I}_{2}}+NaOH\xrightarrow{{}}\underset{idoform}{\mathop{CH{{I}_{3}}}}\,\] \[+NaI+{{H}_{2}}O\] \[C{{H}_{3}}CHO+\underset{\begin{smallmatrix} Fehling's \\ solution \end{smallmatrix}}{\mathop{Cu{{(OH)}_{2}}}}\,\xrightarrow{{}}C{{H}_{3}}COOH\] \[+\underset{red\,ppt.}{\mathop{C{{u}_{2}}O}}\,\downarrow 2{{H}_{2}}O\]
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