Why do we use chromium metal for electroplating over objects made of cheaper metals?
[2 MARKS]

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Reason out: 2 Marks

Chromium has a shiny appearance. It does not corrode and resists scratches. However, chromium is expensive and it may not be economical to make the whole object out of chromium. So the object is made from a cheaper metal and only a coating of chromium over it is deposited.

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Q) Instead of taking the trouble of electroplating metals with chromium for making car parts , taps , cycle parts , etc., why are these objects not made up of chromium itself ?

A) This is because chromium is a very expensive metals . It is a metal which does not rust is resistant from scratches and has a shiny appearance . If we use chromium it will be a huge loss and it also be wastage of the resource chromium thus it is preferable to use chromium only for electroplating objects.

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Q. Instead of taking the trouble of electroplating metals with chromium for making car parts, taps, cycle parts, etc. why are these objects not made of chromium itself?

Q. Chromium is a metal that does not corrode. Instead of electroplating iron with chromium, why are sanitary fittings not made of chromium itself?

Why do we mix Chromium with other metals?

How is electroplating used to give to an object a property which originally the metalic object lacks? Give an example. [2 MARKS]

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Why do we use chromium metal for electroplating over objects made of cheaper metals? [2 MARKS]

Reason out: 2 Marks Chromium has a shiny appearance. It does not corrode and resists scratches. However, chromium is expensive and it may not be economical to make the whole object out of chromium. So the object is made from a cheaper metal and only a coating of chromium over it is deposited.

Why do we use chromium metal for electroplating over objects made of cheaper metals?
[2 MARKS]

Reason out: 2 Marks

Chromium has a shiny appearance. It does not corrode and resists scratches. However, chromium is expensive and it may not be economical to make the whole object out of chromium. So the object is made from a cheaper metal and only a coating of chromium over it is deposited.