Quenched steel is hard and brittle whereas annealed steel is soft.

True

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False

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Solution

The correct option is A True
The process of quenching or quench hardening involves heating the material and then rapidly cooling in water, oil, forced air or inert gases such as nitrogen.
Annealing involves heating a material to above its recrystallization temperature, maintaining a suitable temperature, and then cooling it slowly.
Quenched steel is brittle and hard whereas annealed steel is soft.

Suggest Corrections

(p) Nitriding	(I) Process of heating steel to redness and then cooling it very slowly
(Q)Annealing	(II) Process of heating steel in presence of $N H_{3}$ and producing hard coating of Iron Oxide on the surface of steel
(R) Tempering	(II) Process of heating steel to redness and then cooling it suddenly by plunging it into water or oil.
(S) Quenching	(IV) Process of heating quenched steel to a temperature well below redness and then cooling it slowly