8th Class Science Chemical Effects of Electric Current Question Bank Chemical Effects of Electric Current

  • question_answer When electricity is passed through calcium nitrate solution in water, what is likely to be formed at the cathode and why?

    A)  Hydrogen because it is a very reactive than calcium

    B)  Calcium because it is a very reactive than hydrogen

    C)  Hydrogen because it is less reactive than calcium

    D)  Calcium because it is less reactive than hydrogen.

    Correct Answer: C

    Solution :

    Calcium is a very reactive metal.

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