Question

7. What is electroplating? Write any four applications of electroplating.

8. Write down the important points, which should be remembered while electroplating.

9. Explain the method of copper plating an iron spoon/nail.

10. 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?

11. Which properties of chromium metal make it suitable for electroplating it on car bumpers, bath taps and bicycle handle etc., which are made of iron?

12. Draw a schematic diagram of the step-up for electrorefining copper.

13. Explain the structure of a dry cell with the help of a well labelled diagram.

14. Sea water is a better conductor of electricity than

tap water. Why?​

Answer 1

Answer: the process of coating the thin layer of metals with desired metal to resist from rust is called electroplating. 1-Tin cans used for storing food are made by electroplating tin metal on to iron. 2-it is used in bicycle to resist rust or corrosion. ... 4-it is used in LPG stoves to resist rust........

i know the answer only for the 7 th one

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Explanation: