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Question

Steel which destroys by burning is called _______.

A.

alloy steel

B.

carbon steel 

C.

silicon steel 

D.

killed steels

Answer ( Option D)

killed steels

Solution

Killed steel is steel that is completely deoxidized by the addition of an agent before casting such that there is practically no evolution of gas during solidification.

Hence, the correct option is (D).

&Key Points:-

●It is used in manufacturing car bodies.

●It is characterized by a high degree of chemical homogeneity and freedom from gas porosities.

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