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Solution


Q.

Which of the following is likely to happen when the current is started
1 Iron will be deposited on the copper plate.  
2 Copper will continue to be deposited on the iron plate.  
3 No reaction will occur at the iron plate or at the copper plate.  
4 The copper already deposited on the iron plate will go back into the solution.  

Ans.

(2)

Cu2+ ion travels towards the negative terminal, i.e. iron plate, and deposits on it because it is positively charged. As a result, the iron plate is copper-plated. Since copper atoms enter the solution from the positive terminal, i.e., the copper plate, there is no shortage of copper atoms.