JEE Main & Advanced Sample Paper JEE Main Sample Paper-19

  • question_answer Which of the following compound cannot used in preparation of iodoform?    

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

    B)  \[C{{H}_{3}}COC{{H}_{3}}\]

    C)  \[HCHO\]                    

    D)  2-propanol       

    Correct Answer: C

    Solution :

     Formaldehyde cannot produce iodoform, as only those compound which contains either \[C{{H}_{3}}-\underset{OH}{\mathop{\underset{|}{\mathop{C}}\,}}\,H-\] group or \[C{{H}_{3}}-\underset{O}{\mathop{\underset{||}{\mathop{C}}\,}}\,H-\]group on reaction with potassium iodide and sod. hypochlorite yield iodoform.


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