JEE Main & Advanced Chemistry The p-block Elements-II / p-ब्लॉक तत्व-II Question Bank Self Evaluation Test - The p-Block Elements (Group 13 and Group 14)

  • question_answer
    In which of the following, a salt of the type \[KM{{O}_{2}}\] is obtained?

    A) \[{{B}_{2}}{{H}_{6}}+KOH\,(aq)\to \]

    B) \[Al+KOH\left( aq \right)\to \]

    C) Both

    D) None of these

    Correct Answer: C

    Solution :

    [c] \[{{B}_{2}}{{H}_{6}}+2KOH+2{{H}_{2}}O\to \underset{\begin{smallmatrix}  Potassium\text{ } \\  metaborate \end{smallmatrix}}{\mathop{2KB{{O}_{2}}}}\,+6{{H}_{2}}\] \[2Al+2KOH+2{{H}_{2}}O\to \underset{\begin{smallmatrix}  Potassium\text{ } \\  meta\text{ }aluminate \end{smallmatrix}}{\mathop{2KAl{{O}_{2}}}}\,+3{{H}_{2}}\]


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