For each ton of pig iron produced from blast furnace, the lime stone used is approximately
A.0.01 ton
B.0.1 ton
C.0.4 tom
D.1.4 ton
E.2.55 tons
Category: Metallurgy Mcqs
Local hardening of steel can be done by all of the following EXCEPT:
A.induction hardening
B.flame hardening
C.stepped uniform heating
D.resistance heating
Which of the following is fluxing material for cupola?
A.Limestone
B.Fluorspar
C.Soda Ash
D.Any of the above
E.None of the above
Manganese is added to steel primarily to increase
A.Tensile strength
B.Fatigue strength
C.Ductility
D.Endurance limit
E.Malleability
The highest rate of quenching is possible in
A.Cold furnace
B.Hot furnace
C.Air
D.Oil
E.Water
Which of the following material is added to cast iron to obtain nodular cast iron?
A.Chromium
B.Copper
C.Magnesium
D.Manganese
E.Molybdenum
Which of the following can be used as fuel in open hearth furnace?
A.Liquid fuels
B.Coke oven gas
C.Producer gas
D.Any of the above
Petrol engine carburetors are manufactured by
A.Sand casting
B.Centrifugal casting
C.Shell casting
D.Die casting
E.Lost wax casting
A steel piece after hardening is heated to 300?C and then cooled in oil. The property imparted to the steel piece will be
A.Softness
B.Toughness
C.Hardness
D.Annealing
Chromium percentage in cutlery stainless steel is
A.6 – 8 percent
B.8 – 10 percent
C.11 – 13 percent
D.15 – 18 percent
E.18 – 20.5 percent
