Which of the following alloying elements reduces the formation of iron sulphide in steel?

Solution (By Examveda Team)

Manganese is added to steel to reduce the formation of iron sulphide (FeS).

Sulphur present in steel tends to form iron sulphide, which causes brittleness and hot shortness.

When manganese is added, it preferentially combines with sulphur to form manganese sulphide (MnS), which is less harmful and more evenly distributed in the steel.

Cobalt improves magnetic properties, Nickel improves toughness and corrosion resistance, and Vanadium increases strength and wear resistance.

Therefore, the alloying element that reduces the formation of iron sulphide in steel is Manganese.