1)When an iron nail rubbed with sand paper is dipped in copper sulphate solution, we observe that copper gets deposited (a) first on the lower part of the nail and proceeds to the upper part. (b) first on the upper part of the nail and proceeds to the lower part. (c) on the entire surface of the nail. (d) on the nail in small patches.

c. entire surface of the nail (but only the part that is in contact with the solution)

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it reacts with the entire surface of nail

(but the nail should wholly dipped into the copper sulphate solution)

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