7000+ Physical Metallurgy MCQ Questions and Answers - 1

Question: 1

Which is the softest structure that appears on iron carbon equilibrium diagram?

(A) Austenite

(B) Cementite

(C) Pearlite

(D) Ferrite

Question: 2

In alloy steels, which element is added to achieve fine grain structure and to avoid grain growth at high temperature?

(A) Cobalt

(B) Copper

(C) Nickel

(D) Vanadium

Question: 3

Which of the following elements does not form carbide in steel?

(A) Manganese

(B) Molybdenum

(C) Chromium

(D) Nickel

Question: 4

Which of the following is a structural constituent of an alloy?

(A) Sorbite

(B) Martensite

(C) Pearlite

(D) Eutectic

Question: 5

Carburiser used in gas carburising in

(A) Ammonia

(B) Acetylene

(C) Nitrogen

(D) Natural gas