Multiple Choice Questions on Material Science

Multiple Choice Questions on Material Science

1- Hardness of steel greatly improved with which of the following heat treatment process?

(A) Normalizing

(B) Cyaniding

(C) Tempering

(D) Annealing


2- By which metal addition, the resistance to corrosion in steel increases?

(A) Vanadium

(B) Tungsten

(C) Molybdenum

(D) Chromium


3- Muntz metal contains __ % of copper and ___ % of zinc.

(A) 70, 30

(B) 60, 40

(C) 50, 50

(D) 40, 60


4- In gray cast iron, the percentage of carbon ranges from

(A) 1 to 2 %

(B) 2 to 3%

(C) 3 to 4%

(D) 4 to 5%


5- Annealing heat treatment is a

(A) non-cooling process

(B) very rapid cooling process

(C) very slow cooling process

(D) slow cooling process


6- Failure due to repeated or reversal stresses is called

(A) Fatigue

(B) Brittleness

(C) Creep

(D) Hardness


7- The property of a metal existing in more than one crystalline form is

(A) Recalescence

(B) Polymorphism

(C) Solidification

(D) Crystallization


8- The solidification of liquid at constant temperature into two phase mixture is called

(A) Eutectic reaction

(B) Hypo Eutectoid reaction

(C) Eutectoid reaction

(D) Peritectic reaction


9- Iron carbon alloy with less than 25% carbon is called

(A) wrought iron

(B) steel

(C) pig iron

(D) cast iron


10- The mixture of ferrite and cementite is known as

(A) Austinite

(B) Ledeburite

(C) pearlite

(D) cementite


11- Yellow brass is also known as

(A) Muntz metal

(B) Naval brass

(C) Gun metal

(D) Cartridge brass


12- The raw material required for making pig iron are

(A) coal, coke, ore

(B) coke, limestone, ore

(C) ore, coke, wrought iron

(D) coal, limestone, ore


13- Mild steel is a

(A) high speed steel

(B) high carbon steel

(C) medium carbon steel

(D) low carbon steel


14- In Induction hardening process, ___ is high.

(A) temperature

(B) frequency

(C) voltage

(D) current


15- Annealing heat treatment process

(A) increases surface hardness

(B) improves ductility

(C) improves the hardness

(D) refines grain structure


16- What happens to the toughness of material when it is heated ?

(A) remains same

(B) increases

(C) decreases

(D) stabilize



1-(B), 2-(D), 3-(B), 4-(C), 5-(C), 6-(A), 7-(B), 8-(A), 9-(B), 10-(C), 11-(A), 12-(B), 13-(D), 14-(B), 15-(B), 16-(C)