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NEET Sample Paper NEET Sample Test Paper-20

  • question_answer
    In the electrolysis of dilute \[{{H}_{2}}S{{O}_{4}}\]what is liberated at anode?

    A) \[S{{O}_{2}}\]                                 

    B) \[{{H}_{2}}\]            

    C)      \[S{{O}_{4}}^{2-}\]          

    D)      \[{{O}_{2}}\]   

    Correct Answer: D

    Solution :

    At cathode \[2{{H}^{+}}+2{{e}^{-}}\to {{H}_{2}}\] \[4{{H}^{+}}+4{{e}^{-}}\to 2{{H}_{2}}\] At anode \[2{{H}_{2}}O\to {{O}_{2}}+4{{H}^{+}}+4{{e}^{-}}\] Hence, the correct option is (d).          


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