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Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-19

  • question_answer
    Which of the following is a heterocyclic compound?

    A)  Phenolphthalein

    B)  Thiophene

    C)  Phenol 

    D)  Aniline

    Correct Answer: B

    Solution :

    Thiophene is an important heterocyclic compounds that are widely used as an building block in many agrochemicals and pharmaceuticals.


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