A) ethanol
B) propanone
C) 2-butanol
D) ethanol
Correct Answer: D
Solution :
Ethanal gives both iodoform and Fehling's tests \[C{{H}_{3}}CHO+\underset{\text{blue}}{\mathop{2C{{u}^{2+}}}}\,+3O{{H}^{-}}\xrightarrow[\begin{smallmatrix} \text{Fehing} \\ \,\,\,\,\text{test} \end{smallmatrix}]{\Delta }C{{H}_{3}}CO{{O}^{-}}\] \[+\,\underset{\text{red}\,\text{ppt}\text{.}}{\mathop{2C{{u}^{+}}}}\,\downarrow +\,2{{H}_{2}}O\] \[C{{H}_{3}}CHO+3{{I}_{2}}+4NaOH\xrightarrow[\begin{smallmatrix} \text{Iodoform} \\ \,\,\,\,\,\,\,\text{test} \end{smallmatrix}]{\text{ }\!\!\Delta\!\!\text{ }}\underset{\text{iodoform}}{\mathop{C{{H}_{3}}I\downarrow }}\,\] \[+\,HCOONa+3NaI+3{{H}_{2}}O\]
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