Railway Science (Chemistry-Metals , Non-Metals and Alloys) (Part-III)

(Reactivity Series). For any two metals in the series, the metal placed higher in the series can displace lower metals from their salt solution. Potassium is the most reactive metal.
Electrolytic Reduction - The metals which are highly reactive are obtained by electrolysis of their molten ores and pure metal is obtained near the cathode. Conductivity - The ability of a metal to conduct electricity through. Reactivity - Rate at which a chemical substance tends to undergo a chemical reaction.

It stops the dislocation of the Iron atoms in the crystal lattice from sliding past one another. Therefore this type of impurity is used to control the hardness, ductility and tensile strength of carbon. It is also added to Steel to increase strength and hardness.

It is a unique form of carbon that displays some properties of both metals and non-metals. It is non-metal in terms of its chemical properties but exhibits certain metallic properties due to its unique structure.
It is not elastic and has high electrical and thermal conductivity. It is also chemically inert and highly refractory. Malleability is a material's ability to form thin sheets under pressure by hammering or rolling. Examples of malleable metals: gold, iron, aluminum, copper, silver and lead.