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  • Question
  • White cast iron is not


  • Options
  • A. malleable
  • B. whitish in color
  • C. brittle
  • D. strong and hard

  • Correct Answer
  • malleable 


  • Materials and Construction problems


    Search Results


    • 1. Invar used in thermocouples is an alloy of nickel and

    • Options
    • A. iron
    • B. copper
    • C. chromium
    • D. lead
    • Discuss
    • 2. Which of the following stainless steels is non-magnetic?

    • Options
    • A. Ferritic
    • B. Martensitic
    • C. Austenitic
    • D. None of these
    • Discuss
    • 3. German silver in an alloy of

    • Options
    • A. copper, nickel and zinc.
    • B. copper, aluminium and silver.
    • C. silver, zinc and aluminium.
    • D. silver, nickel and zinc.
    • Discuss
    • 4. 18-4-1 high speed steel contains 18%, 4% and 1% respectively of

    • Options
    • A. tungsten, vanadium and chromium
    • B. tungsten, chromium and vanadium
    • C. vanadium, chromium and tungsten
    • D. chromium, tungsten and vanadium
    • Discuss
    • 5. Nickel (56%) and molybdenum (17%) alloys are called

    • Options
    • A. monel
    • B. hastealloy C
    • C. inconel
    • D. bronzes
    • Discuss
    • 6. Heavy duty bearings are usually made of

    • Options
    • A. white metal
    • B. phosphorous bronze
    • C. monel
    • D. zinc
    • Discuss
    • 7. Ceramic recuperators are generally made of

    • Options
    • A. silicon carbide.
    • B. calcium carbide.
    • C. fireclay bricks.
    • D. high alumina bricks.
    • Discuss
    • 8. The metals occuring at the lower most position in the electromotive series

    • Options
    • A. do not resist corrosion.
    • B. resist corrosion very strongly.
    • C. are very brittle.
    • D. are heat insulators.
    • Discuss
    • 9. Constantan is an alloy of

    • Options
    • A. Cu (55%) & Sn (45%).
    • B. Cu (55%) & Ni (45%).
    • C. Pt (95%) & Rh (10%).
    • D. Fe (80%) & Ni (20%).
    • Discuss
    • 10. The main purpose of galvanising iron sheets is to

    • Options
    • A. harden the surface.
    • B. increase its glossiness and lustre.
    • C. prevent the action of water.
    • D. prevent the action of oxygen.
    • Discuss


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