D And F Block Elements Question 454
Question: By annealing, steel
[BHU 2004]
Options:
A) Becomes soft
B) Becomes liquid
C) Becomes hard and brittle
D) Is covered with a thin film of $ Fe_3O_4 $
Show Answer
Answer:
Correct Answer: A
Solution:
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.
BETA
