1000+ Metallurgy Engineering Question Bank with Answers Pdf - 2

Question: 6

Which of the following material is used for permanent magnets?

(A) invar

(B) elnivar

(C) delta metal

(D) alnico

Question: 7

Dilute nitric acid applied to a clean fracture of white cast iron will produce

(A) brown stain

(B) black stain

(C) grey stain

(D) white stain

Question: 8

Mild steel has the structure of

(A) face centered cubic

(B) cubic structure

(C) body centered cubic

(D) hexagonal close packed

Question: 9

An instrument which is used for measuring temperature variations by change in a metallic resistance is called a

(A) thermo-generator

(B) thermocouple

(C) thermopile

(D) bolometer

Question: 10

Lowest melting point may be expected for

(A) aluminium

(B) lead

(C) copper

(D) brass