7000+ Metallurgical Engineering MCQ Questions and Answers - 2

Question: 6

In an alloy steel, austenite can be present even at subzero temperature because of the presence of high percentage of

(A) Aluminum

(B) Chromium

(C) Cobalt

(D) Carbon

Question: 7

______ of steel castings results in improved mechanical properties.

(A) Tempering

(B) Recrystallisation annealing

(C) Hardening

(D) Phase annealing

Question: 8

Razors are made of ______ steel.

(A) High carbon

(B) Medium carbon

(C) Low carbon

(D) Mild

Question: 9

Which alloying element does not improve the machinability of steel?

(A) Phosphorous

(B) Silicon

(C) Sulphur

(D) Lead

Question: 10

Which one contains the least percentage of carbon?

(A) Cast iron

(B) High speed steel

(C) Pig iron

(D) Wrought iron