define rusting of iron and write any three method to prevent rusting
Answers
Answer:
The rusting of iron can be prevented by painting, oiling, greasing or varnishing its surface. (2) Galvanisation is another method of protecting iron from rusting by coating iron with a thin layer of zinc. (3) Corrosion of iron is prevented by coating iron with non-xcorrosive substance like carbon.
Answer:
What is Rusting?
• Rust is a coating that occurs on the surface of iron as it oxidizes. Rust is also known as iron oxide and corrosion. This chemical compound comes in many different combinations of iron and oxygen. Rust is reddish-orange in color.
Methods to prevent rusting
1) Galvanisation
Galvanisation is a method of rust prevention. This is accomplished through hot-dip galvanizing or electroplating. The iron or steel object is coated in a thin layer of zinc. This stops oxygen and water from reaching the metal underneath but the zinc also acts as a sacrificial metal. Zinc is more reactive than iron, so it oxidizes in preference to the iron osation
2) Oiling
A coating of oil will help to prevent rust or slow it down, since it inhibits moisture from reaching the iron in the metal. However, an oily surface might be problematic for some tools or machines and poses environmental and human health concerns.
3) Painting
A good quality paint will slow down rusting by preventing moisture from reaching the metal and thus will stop rusting.
Hope this answer helps you : )