Which of the statement is false in the context of chromium planting Chromium is used for electroplating because?

It has a dull appearance
It does not corrode
It resists scratches
It is expensive to make the whole object out of it

LohaHridoy

5 views

2025-01-04 04:42

1 Answers

AhmedNazir

Option 1 : It has a dull appearance

Explanation:

Electroplating is the process of coating the thin layer of metals with desired metal to resist rust.
Chromium metal has a shiny appearance.
It is used for electroplating so that it does not corrode and resist scratches over the objects.
It does not corrode easily as it is not very reactive with oxygen and gives a lustrous appearance.
Chromium is expensive and it may not be able to make the whole object out of chromium.
The object is made from a cheaper metal and only a coating of chromium over it is deposited.

Thus, the false statement in the context of chromium plating is that it has a dull appearance.

Other processes:

1. Galvanizing	A thin layer of zinc is applied to prevent the corrosion of iron or steel.
2. Tinning	A layer of molten tin is deposited on metals.
3. Anodization	Metals like copper, and aluminum are coated with a thin and strong layer of their oxides using electrolysis.
4. Electroplating	A less reactive metal is coated on a more reactive metal by electrolysis.
5. Alloying	The homogenous mixture formed by mixing metal with other metals or non-metals in a certain proportion is called an alloy.
6. Pickling	Removing layers of basic oxides from metals before electroplating.
7. Poling	Poling is a method used to purify metals that have oxidized impurities

5 views Answered 2022-09-04 04:29

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