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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

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  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.

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  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

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  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.

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  9. Silicon percentage in acid resistant cast iron is about

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

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  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.

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

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

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

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

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

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

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

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

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