Uttarakhand PMT Uttarakhand PMT Solved Paper-2004

  • question_answer
    Which of the following elements are essential for the photolysis of water ?

    A)  \[Ca\] and \[C\]  

    B)  \[\text{Mn}\]and \[\text{Cl}\]

    C)  \[\text{Zn}\] and \[I\]    

    D)  \[Cu\] and \[Fe\]

    Correct Answer: B

    Solution :

    Photolysis of water means break down of water in the presence of sun light. This generates oxygen. Photolysis of water takes place in light reaction and it requires chloride and manganese ions as catalyst. \[\begin{align}   & 2{{H}_{2}}O2O{{H}^{-}}+2{{H}^{+}} \\  & 2{{H}^{-}}+2OH2{{H}_{2}}O+{{H}_{2}}\uparrow  \\ \end{align}\]


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