Question 2
Rakesh wanted to coat an iron anicle by carrying out the process of chrome plating. What should he connect to the two terminals of the
battery& give one advantage of the process he wanted to carryout
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The chrome plating process is a method of applying a thin layer of chromium onto a substrate (metal or alloy) through an electroplating procedure.
Two terminals of the battery :-
1. Hexavalent chromium. This is the most toxic form of chromium and is a known human carcinogen. Toxic waste produced from the hexavalent chromium bath is a hazardous waste material and must be treated prior to disposal.
2. Trivalent chromium. This has a much lower toxicity than hexavalent chromium. However, its use and disposal of any waste material is also strictly controlled.
All companies are legally required to carry out strict monitoring when carrying out any electrolytic chromium processes.
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