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Question

In the process of purification of copper metal, a thin plate of pure copper and a thick rod of impure copper are used as electrodes, and a metal salt solution is used as an electrolyte : 
(a) Which electrode is connected to the positive terminal of the battery ? 
(b) Which electrode is connected to the negative terminal of the battery ? 
(c) Which metal salt solution is taken as electrolyte ? 


Solution

(a) Thick rod of impure copper (b) Thin plate of pure copper (c) Copper sulphate solution

Physics
Science for Eighth Class
Standard VIII

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