Question

pls help me it's is of science there are 11-15question let me know fast pls ​

Answer 1

Answer:

11.In the process of electrolytic gold refining, hydrochloric acid is used as an electrolyte.

12.The process used in purifying metals by electrolysis is called electrorefining. In the process of refining metal in an electrolytic cell, in which the impure metal is used as the anode and the refined metal is deposited on the cathode.

13.Galvanisation or galvanization (or galvanizing as it is most commonly called) is the process of applying a protective zinc coating to iron or steel, to prevent rusting. The most common method is hot-dip galvanizing, in which steel sections are submerged in a bath of molten zinc.

14.Gold plated – sometimes called electroplated – items are made with a layer of gold on the surface over another type of metal underneath. On some occasions, items are gold plated to try and fool buyers or cash-for-gold operators.

15.Electroplating is the process of plating one metal onto another by hydrolysis, most commonly for decorative purposes or to prevent corrosion of a metal. There are also specific types of electroplating such as copper plating, silver plating, and chromium plating.

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