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JEE Main & Advanced Chemistry The p-Block Elements-I / p-ब्लॉक के कुछ तत्व-I Question Bank Boron Family

  • question_answer
    When orthoboric acid \[({{H}_{3}}B{{O}_{3}})\] is heated, the residue left is [Pb. PMT 2002]

    A) Metaboric acid

    B) Boron

    C) Boric anhydride

    D) Borax

    Correct Answer: C

    Solution :

    \[2{{H}_{3}}B{{O}_{3}}\to {{B}_{2}}{{O}_{3}}+3{{H}_{2}}O\].


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