Haryana PMT Haryana PMT Solved Paper-2006

  • question_answer
    Which of the following does not contain \[-COOH\] group?

    A)  Aspirin

    B)  Benzoic acid

    C)  Picric acid

    D)  All have \[-COOH\] group

    Correct Answer: C

    Solution :

                    Picric acid is 2, 4, 6-trinitrophenol. It has three powerful electron-withdrawing groups which stabilise the corresponding phenoxide ion by resonance also. Hence, picric acid is strong acid \[{{(}_{p}}{{K}_{a}}\approx 2)\].


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