Top 250+ Solved Metallurgy MCQ Questions Answer
Q. Vicker's hardness number of diamond could be of the order of
a. 8000
b. 800
c. 4000
d. 15000
e. 12000
Q. Carbon percentage in cutlery stainless steel is
a. 1.35 to 1.65 percent
b. 1.1 to 1.35 percent
c. 1 percent
d. 0.76 to 0.80 percent
e. 0.25 to 0.30 percent
Q. High carbon steels intended to be quenched in water should have manganese percentage less than
a. 1.5 percent
b. 0.5 percent
c. 2 percent
d. 1 percent
e. No manganese percent
Q. A fine grained steel will have the number of grains per square centimeter as
a. 100 to 150
b. 150 to 1000
c. 16 to 56
d. 3 to 16
e. 56 to 100
Q. Uniformity of zinc coating on pipes is tested by
a. Dipping the sample in water
b. Dipping the sample for 10 minutes in calcium hydroxide solution
c. Dipping the sample for 1 minute in conc, hydrochloric acid
d. Dipping the sample for 1 minute in neutral copper sulphate solution
e. By passing electric current for 1 hour
Q. Which of the following materials are usually most ductile?
a. Amorphous
b. Face centred cubic lattice
c. Non-metallic
d. Body centred lattice
e. Hexagonal close-packed lattice
Q. In grey cast iron, free graphite is in the form of
a. Fine powder
b. Needles
c. Nodules
d. Crystals
e. Flakes
Q. Volume of air required to melt one ton of cast iron in a cupola at N.T.P. is roughly
a. 10000 cubic metres of air
b. 10 cubic metres of air
c. 100000 cubic metres of air
d. 100 cubic metres of air
e. 1000 cubic metres of air
Q. The property of a metal when the recovery after unloading is complete but not instantaneous is
a. 9
b. Viscoelasticity
c. Inelasticity
d. Anelasticity
e. creep
Q. Standard electrical resistance are made of
a. Invar
b. Manganin
c. Tungsten
d. Phosphor bronze
e. Constantan
Q. A chisel for cutting steel plates is usually
a. Hardened and tempered
b. Annealed
c. Hardened
d. Tempered
e. Tempered and annealed
Q. Cracks of a vertical nature and dark coloured fissures in a sample of hardened steel indicate that
a. Steel has not been properly heated
b. Steel has been burned
c. Steel contains excessive alloying elements
d. Steel has been properly hardened
e. Steel has achieved maximum possible hardness in accordance with the carbon percentage
Q. Which of the following material is viscoelastic in properties?
a. Graphite
b. Rubber
c. Glass
d. Cork
e. None of the above
Q. Brinell hardness of nitrided surface may be of the order of
a. More than 600
b. 200 to 250
c. 300 to 450
d. 150 to 200
e. 100