Engineering Materials
A reversible change in the atomic structure of the steel with a corresponding change in the properties is known as

Allotropic change
Recrystallization
Precipitation
Heat treatment

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
Carbon steel is

Refined from cast iron
Made by adding carbon in steel
An alloy of iron and carbon with varying quantities of phosphorus and sulphur
Extensively used for making cutting tools

ANSWER DOWNLOAD EXAMIANS APP