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This set of Metallurgy Multiple Choice Questions & Answers (MCQs) focuses on Metallurgy Set 2
Q1 | Silicon when added to copper increases its
- Brittleness
- Malleability
- Electrical conductivity
- Hardness
- Machinability
Q2 | Local hardening of steel can be done by all of the following EXCEPT
- flame hardening
- stepped uniform heating
- resistance heating
- Low specific heat of quenching oil
- induction hardening
Q3 | Which of the following structure is least hard?
- Pearlite
- Presence of cementite
- Martensite
- Sorbite
- Troosite
Q4 | Highest specific gravity is of
- Titanium
- Copper
- Lead
- Steel
- Brass
Q5 | In which process steel is heated below the critical temperature
- Temperting
- Hardening
- Carburizing
- Annealing
- Normalizing
Q6 | Under identical values of cold and hot junction temperatures which thermocouple given the highest output
- Iron constantan
- All give equal output
- Nickel nimo
- Chromel-constantan
- Platinum-platinum-rhodium
Q7 | In tool steel the sulphur content is usually not allowed to exceed
- 3.5 percent
- 0.035 percent
- 5 percent
- 0.001 percent
- 0.35 percent
Q8 | Which of the following material is not used for cyaniding?
- Sodium carbonate
- Sodium chloride
- Sodium hydroxide
- Sodium cyanide
- All of the above
Q9 | The number of atoms per unit cell in BCC is
- 8
- 9
- 3
- 6
- 4
Q10 | As per IS code, C 65 steel will have carbon percentage of
- 0.065 percent
- 0.6 to 0.7 percent
- 6 to 7 percent
- 00 to 70 percent
- None of the above
Q11 | Invar is an alloy of
- Iron and copper
- Iron and nickel
- Iron and chromium
- Iron and zinc
- Iron and vanadium
Q12 | Which of the following can be used as fuel in open hearth furnace?
- Liquid fuels
- Coke oven gas
- Producer gas
- Any of the above
- Low specific heat of quenching oil
Q13 | Which of the following furnaces is not used for non-ferrous materials
- Gas fired tilting furnace
- Pit furnace
- Cupola
- Crucible furnace
- Oil fired tilting furnace
Q14 | In order to observe the grain size of steel samples under microscope, the magnification should be the order of
- 2
- 20
- 1500
- 100
- 10
Q15 | For each ton of pig iron produced from blast furnace, the lime stone used is approximately
- 0.01 ton
- 0.4 tom
- 0.1 ton
- 1.4 ton
- 2.55 tons
Q16 | Chilling, heat treatment and alloy addition to cast iron generally
- reduces machinability
- reduces carbon percentage
- reduces wear resistance
- improves machinability
- None of the above
Q17 | Manganese is added to steel primarily to increase
- Malleability
- Ductility
- Fatigue strength
- Endurance limit
- Tensile strength
Q18 | Just as strong is opposite of weak likewise elastic is opposite of
- Rigid
- Soft
- Ductile
- Inelastic
- Hard
Q19 | Which of the following temperatures represents the tempering temperature for C 30 steel?
- 1700?C
- 100-150?C
- 1400-1450?C
- 550-660?C
- 860-890?C
Q20 | Which thermocouple can measure the highest temperature?
- Tungsten- molybdenum
- Copper-constantan
- Chromel-alumel
- Iron constantan
- Platinum-rhodium
Q21 | Which of the following is the softest material?
- Corundum
- Fluorite
- Diamond
- Quartz
- Calcite
Q22 | Which allotropic form of iron does not have body centred cubic lattice?
- Alpha iron
- Beta iron
- Gamma iron
- Delta iron
- All of the above
Q23 | All of the following are magnetic materials EXCEPT
- Cast iron
- Zinc
- Nickel
- Cobalt
- Iron
Q24 | Machinability of metal depends on
- Hardness
- Hardness and tensile strength
- Brittleness
- Brittleness and toughness
- None of the above
Q25 | Which of the following is not a constituent of Stellite?
- Cobalt
- Tungsten
- Ferrous
- Chromium
- All of the above