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Electrochemistr...

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  • Question 1
    1 / -0

    In a lead storage cell, the EMF

  • Question 2
    1 / -0

    Which of the following statements are incorrect?

    (A) Dilute sulphuric acid, on electrolysis, liberates oxygen at anode.
    (B) The electrical conductivity of acetic acid solution increases when sodium hydroxide solution is added.
    (C) Molten sodium hydride liberates O2 at anode during electrolysis.
    (D) During the electrolytic refining of metal, the impure metal is taken as anode.

  • Question 3
    1 / -0

    In the sacrificial protection of iron, three metals Mg, Zn and Al can be used. Choose the one which is the most effective for the purpose. (Mg2+/Mg = -2.37 V, Al3+/Al = -1.66 V, Zn2+/Zn = -0.76 V, Fe2+/Fe = -0.44 V)

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