Question

what os rust how it can be prevented

Answer 1

hey

Rust is iron oxide. Therefore any method that will prevent oxygen from reacting with iron will prevent rust from forming. Oil is usually the material of choice as it is hydrophobic and prevents water with dissolved oxygen from coming in contact with iron.

methods to prevent from rusting-

Plating: Metals that can rust can be covered by less reactive metals or non-reactive metals.

Alloying: This is the mixture of two or more metals or non-metals. Metals which cannot wear easily are melted into their molten form and are used to cover metals which rust easily. This stops the iron or alloy from rusting.

Coating: The surfaces of iron or metal are coated with paint or grease.

Cathode Protection: This is the method of protecting iron from rusting by connecting it by wires to a more reactive metal such as magnesium or zinc. This method is used when dealing with underground metallic pipe lines and tanks.

Galvanizing the Iron: This is when the iron is coated with a layer of zinc. The zinc reacts with the environment rather than the iron.

Answer 2

rusting can prevent by painting and oiling or greasing the articles the paint act as a passive layer it does not allow the other any other element to act on it.

by alloying and galvanisation.alloying is the process of alloy of metal with metal or metal with non metal.

galvanization is the process of coating zinc in metal or non metal to avoid corrosion
i hope it may helpfull