Question

Which metal is plated on the surface of iron boxes for food preservation?

Answer 1

Cans hold diverse contents: foods, beverages, oil, chemicals, etc. Steel cans are made of tinplate (tin-coated steel) or of tin-free steel. In some dialects, even aluminium cans are called "tin cans".

Answer 2

Tin is plated on the surface of iron boxes for food preservation.

It is done for numerous purposes, most usually for imparting corrosion resistance and ensuring decorative appearance.

There are a number of rewards of this process: Corrosion resistance: a corrosion-prone substance such as iron can be covered with a layer of non-corrosive material, thus shielding the original material.