RAJASTHAN ­ PET Rajasthan PET Solved Paper-2003

  • question_answer
    Which of the following compound forms 3-hydroxy butanal on reaction with dil. alkali?

    A)  \[C{{H}_{3}}CHO\]                      

    B)  \[HCHO\]

    C)  \[C{{H}_{3}}CHO+C{{H}_{3}}COC{{H}_{3}}\]

    D)  \[C{{H}_{3}}COC{{H}_{3}}\]

    Correct Answer: A

    Solution :

     \[2C{{H}_{3}}CHO\xrightarrow[{}]{Dil.alkali}\underset{3\text{ }-hydroxy\text{ }butanal}{\mathop{C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  H \end{smallmatrix}}{\overset{\begin{smallmatrix}  H \\  | \end{smallmatrix}}{\mathop{C}}}\,-C{{H}_{2}}-CHO}}\,\] This is aldol condensation reaction.


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