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Q.

Which of the following is not a chemical change caused by the electric current passing through the electrolytic cell?

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a

Change in the colour of the solution 

b

Change in the shape of the electrode

c

The gas bubble formed near the electrode

d

Deposition of metal on the electrode

answer is D.

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Detailed Solution

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The chemical change caused by the electric current is a gas bubble near the electrode, metal deposition on the electrode, and a change in the colour of the solution. Change in the shape of the electrode is caused due to the physical deposition or removal of ions and not due to any chemical reaction.

The correct answer is: Change in the shape of electrode.

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