MCQ on Material Science and Metallurgy

MCQ on Material Science and Metallurgy

1-Fastest method for case hardening is

(A) Nitriding

(B) Cyaniding

(C) Induction hardening

(D) Carburizing

 

2-In cold working material gets stronger due to

(A) Dislocation multiplication

(B) Slip system

(C) Twin mechanism

(D) Wear mechanism

 

3-Annealing heat treatment process is

(A) increases surface hardness

(B) improves the hardness

(C) refines grain structure

(D) improves ductility

 

4-The effect on toughness of a material, when it is heated

(A) no effect

(B) increases

(C) decreases

(D) depends upon the conditions

 

5-Mild steel is a

(A) high speed steel

(B) medium carbon steel

(C) high carbon steel

(D) low carbon steel

 

6-Corrosion resistance of steel is increased by adding

(A) Chromium

(B) Magnesium

(C) Manganese

(D) Carbon

 

7-γ-alloy is an alloy of

(A) Tin

(B) Aluminium

(C) Copper

(D) Nickel

 

8-The raw material required for making pig iron are

(A) coal, ore, coke

(B) coal, limestone, ore

(C) ore, coke, wrought iron

(D) coke, limestone. ore

 

9-The mixture of ferrite and cementite is known as

(A) Austenite

(B) Pearlite

(C) Cementite

(D) Ledeburite

 

10-Yellow brass is also known as

(A) Muntz metal

(B) Naval brass

(C) Gun metal

(D) Cartridge brass

 

ANSWERS:

1-(B), 2-(A), 3-(D), 4-(C), 5-(D), 6-(A), 7-(D), 8-(D), 9-(B), 10-(A)