Q. By annealing, steel
A) Becomes soft
B) Becomes liquid
C) Becomes hard and brittle
D) Is covered with a thin film of $Fe_{3}O_{4}$
Explanation
(a)
When the quenched steel is heated to temperature below red hot and then allowed to cool slowly. It becomes soft. This process is known as annealing
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.