Question

11.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:​

Answer 1

Answer:

Copper ion is positively charged. It is attracted towards the plate which is connected to the negative terminal of the battery. As copper ions are transferred to the thin copper plate, this thin pure copper plate must be connected to the negative terminal of the battery. Consequently, impure copper rod is connected to the positive terminal of the battery (see fig. given below), Reactions that take place in this process are:

(i) At cathode (negative copper plate):

Cu

2+

+2e

−

→Cu (Reduction of Cu)

The Cu atoms so produced get deposited on the cathode.

(ii) At anode (positive copper plate)

Cu→Cu

2+

+2e

−

(oxidation of Cu)

solutions

Answer 2

Answer:

Milk can be obtained from cow, buffalo, she goat and she camel.

Explanation:

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