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)