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  • Question
  • The charge is fed into the blast furnace through the


  • Options
  • A. stack
  • B. throat
  • C. bosh
  • D. tuyers

  • Correct Answer
  • throat 


  • Engineering Materials problems


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    • 1. Which of the following process of steel making is in operation at Tata Iron and Steel Works, Jamshedpur?

    • Options
    • A. Bessemer process
    • B. Open hearth process
    • C. Duplex process
    • D. Electric process
    • Discuss
    • 2. The hardness is the property of a material due to which it

    • Options
    • A. can be drawn into wires
    • B. breaks with little permanent distortion
    • C. can cut another metal
    • D. can be rolled or hammered into thin sheets
    • Discuss
    • 3. A material is said to be allotropic, if it has

    • Options
    • A. fixed structure at all temperatures
    • B. atoms distributed in random pattern
    • C. different crystal structures at different temperatures
    • D. any one of the above
    • Discuss
    • 4. The unit cells

    • Options
    • A. contain the smallest number of atoms which when taken together have all the properties of the crystals of the particular metal
    • B. have the same orientation and their similar faces are parallel
    • C. may be defined as the smallest parallelopiped which could be transposed in three coordinate directions to build up the space lattice
    • D. all of the above
    • Discuss
    • 5. The hardness and tensile strength in austenitic stainless steel can be increased by

    • Options
    • A. hardening and cold working
    • B. normalising
    • C. martempering
    • D. full annealing
    • Discuss
    • 6. The steel produced by bessemer or open hearth process is __________ to that produced by L-D process.

    • Options
    • A. superior
    • B. inferior
    • Discuss
    • 7. Nodular cast iron is produced by adding __________ to the molten cast iron.

    • Options
    • A. nickel
    • B. chromium
    • C. copper
    • D. magnesium
    • Discuss
    • 8. Silicon when added to copper improves

    • Options
    • A. machinability
    • B. hardness
    • C. hardness and strength
    • D. strength and ductility
    • Discuss
    • 9. The hardness of steel increases if it contains

    • Options
    • A. pearlite
    • B. ferrite
    • C. cementite
    • D. martensite
    • Discuss
    • 10. Brass is an alloy of

    • Options
    • A. copper and zinc
    • B. copper and tin
    • C. copper, tin and zinc
    • D. none of these
    • Discuss


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