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JEE Main & Advanced Chemistry Aldehydes, Ketones Question Bank Critical Thinking Aldehydes,

  • question_answer
    Which of the following will fail to react with potassium dichromate and dilute sulphuric acid

    A)                 Ethyl alcohol (ethanol)

    B)                 Acetaldehyde (ethanal)

    C)                 Secondary propyl alcohol (2-propanol)

    D)                 Acetone (propanone)

    Correct Answer: D

    Solution :

                    Acetone oxidise by \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] & conc. \[{{H}_{2}}S{{O}_{4}}\] into carboxylic acid. It is not oxidised by dilute \[{{H}_{2}}S{{O}_{4}}\].


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