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Chemical Engineering :: Materials and Construction

  1. __________ alloys have the highest specific strength of all the structural materials out of the following.

  2. A.
    Magnetic steel
    B.
    Titanium
    C.
    Chromium
    D.
    Magnesium

  3. 100% H2SO4 at 30°C can't be stored in a vessel made/lined with

  4. A.
    cast iron and high silicon iron.
    B.
    mild steel and stainless steel.
    C.
    aluminium, tin and rubber.
    D.
    teflon, glass and porcelain.

  5. Carbon content in plain carbon steel is __________ percent.

  6. A.
    0.1 to 0.15
    B.
    0.35 to 0.45
    C.
    0.65 to 0.80
    D.
    0.85 to 1.2

  7. Duralumin is an alloy of

  8. A.
    aluminium, copper and manganese.
    B.
    aluminium, nickel and silicon.
    C.
    aluminium and nickel.
    D.
    none of these.

  9. Silicon percentage in acid resistant cast iron is about

  10. A.
    4
    B.
    8
    C.
    14
    D.
    20

  11. Concentrated HCl at 30°C can be stored in a vessel made of

  12. A.
    PTFE and porcelain.
    B.
    cast iron and aluminium.
    C.
    stainless steel and high silicon cast iron.
    D.
    none of these.

  13. Which of the following stainless steels is non-magnetic ?

  14. A.
    Ferritic
    B.
    Martensitic
    C.
    Austenitic
    D.
    None of these

  15. A magnetic material becomes __________ above the Curie temperature.

  16. A.
    ferromagnetic
    B.
    diamagnetic
    C.
    paramagnetic
    D.
    none of these

  17. Which of the following is not a non-ferrous alloy ?

  18. A.
    Meehanite
    B.
    Magnalium
    C.
    Gun metal
    D.
    Muntz metal

  19. Which of the following is the most elastic material ?

  20. A.
    Plastic
    B.
    Glass
    C.
    Steel
    D.
    Rubber