JEE Main & Advanced Chemistry Aldehydes, Ketones Question Bank Properties

  • question_answer
    Acetaldehyde cannot show         [AIIMS 1997]

    A)                 Iodoform test   

    B)                 Lucas test

    C)                 Benedict's test 

    D)                 Tollen's test

    Correct Answer: B

    Solution :

               \[{{1}^{o}}\,\,\text{Primary}\,\,\text{alcohol}\xrightarrow{ZnC{{l}_{2}}/HCl}\]                    White turbidity only heating                    \[{{2}^{o}}\,Alcohol\xrightarrow{ZnC{{l}_{2}}/HCl}\]White turbidity                    after 5 min heating                                 \[{{3}^{o}}\,\,\text{Alcohol}\xrightarrow{ZnC{{l}_{2}}/HCl}\] easily in seconds


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