Physical Metallurgy Previous Year Question Papers with Solutions Pdf - 1

Question: 1

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

(A) Austenite

(B) Cementite

(C) Martensite

(D) Pearlite

Ans: B


Question: 2

Pearlite phase in steel comprises of the alternate layers of

(A) Martensite and ferrite

(B) Martensite and cementite

(C) Ferrite and cementite

(D) Bainite and cementite

Ans: C

Ferrite and cementite

Question: 3

The super saturated solution of carbon in _____ iron is known as martensite.

(A) Alpha

(B) Beta

(C) Gamma

(D) None of these

Ans: A


Question: 4

Austenitic stainless steel is

(A) Magnetic in annealed condition

(B) Hardenable by heat treatment

(C) Hardenable only by cold working

(D) Magnetic in annealed condition

Ans: C

Hardenable only by cold working

Question: 5

Solid solution of carbon in gamma iron is called

(A) Austenite

(B) Cementite

(C) Leduburite

(D) Iron carbide

Ans: A


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