The cold chisels are made from

A. Cast iron

B. Mild steel

C. High speed steel

D. Cast tool steel

Answer: Option D

Solution(By Examveda Team)

Cold chisels are made from carbon tool-steel, which is usually octagonal in cross-section.
Tool-steel is used as it can be hardened to form a hard and tough cutting edge.
To make a cold chisel heat the end of the bar of tool steel until it is bright red and hammer to the desired shape.