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.



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