VMMC VMMC Medical Solved Paper-2011

  • question_answer
    In an copper voltameter experiment current is decreased to one-fourth of initial value but it is passed for four times the earlier duration, then the amount of copper deposited will be

    A)  same

    B)  \[\frac{1}{4}\]th of the previous value

    C)   4 times the previous value

    D)  \[\frac{1}{16}\]th            of the    previous value

    Correct Answer: A

    Solution :

                            According to Faradays law of electrolysis, amount of substance deposited on electrode \[{{m}_{1}}=zit\] where,   i = current, t = time z = electrochemical equivalent \[{{m}_{2}}=z\frac{i}{4}\times 4t\] \[=zit\] The amount of substance deposited at the electrode will be equal.


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