State two ways to prevent the rusting of iron.
Answer
Rusting of iron can be prevented by :
(1) Galvanization
- In galvanisation, a sacrificial coating of zinc is applied on iron and steel .
- Since Zn is more reactive than Iron, the Zn coating reacts with the surroundings, leaving the Iron untouched.
It prevents steel and iron from rusting .
(2) Alloying
An alloy is a homogeneous mixture of 2 or more metals. In alloying ,a metal is mixed with some metal or nonmetal. This changes the properties of the metal .
Example
When iron is mixed with Nickel and chromium ,we get stainless steel .This prevents corrosion as iron rusts but stainless steel does not.
983 students joined Teachoo Black. What are you waiting for?