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Question

You have a wire of pure copper and a block of impure copper. How will you clean the impure copper?


  1. Set up an electroplating circuit with carbon as negative terminal 

  2. Set up an electroplating circuit with clean copper as negative terminal dipped in lemon juice solution. 

  3. Set up an electroplating circuit with clean copper as negative terminal dipped in copper sulphate solution 

  4. Set up an electroplating circuit with clean copper as positive terminal dipped in copper sulphate solution 


Solution

The correct option is C

Set up an electroplating circuit with clean copper as negative terminal dipped in copper sulphate solution 


Clean copper as negative terminal dipped in copper sulphate solution will get only pure copper from the block of impure copper.

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