JEE Main & Advanced Chemistry Aldehydes, Ketones Question Bank Introduction

  • question_answer
    Which of the aldehyde is most reactive?                 [DCE 2004]

    A)                 \[{{C}_{6}}{{H}_{5}}-CHO\]         

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

    C)                 \[HCHO\]            

    D)                 All the equally reactive

    Correct Answer: C

    Solution :

               Among Carbonyl Compounds, reactivity decrease with increase in alkyl groups as alkyl groups (+I effect) decrease positive character on C-atom. Thus, the correct order of reactivity is                 \[HCHO>C{{H}_{3}}CHO>{{C}_{6}}{{H}_{5}}CHO\]


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