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Chemical Engineering :: Materials and Construction

  1. German silver in an alloy of

  2. A.
    copper, nickel and zinc.
    B.
    copper, aluminium and silver.
    C.
    silver, zinc and aluminium.
    D.
    silver, nickel and zinc.

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  3. A suitable material of construction to use with fuming sulphuric acid is

  4. A.
    carbon steel
    B.
    stainless steel type 304
    C.
    nickel
    D.
    monel

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  5. Which of the following crystal structures characterises the austenitic stainless steel?

  6. A.
    Simple hexagonal
    B.
    Body centred cubic
    C.
    Face centred cubic
    D.
    None of these

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  7. Caustic soda is produced in a mercury cell having anode and cathode made respectively of moving mercury and

  8. A.
    moving mercury and graphite.
    B.
    graphite and moving mercury.
    C.
    moving mercury and carbon.
    D.
    moving mercury and crimped steel wire.

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  9. Addition of __________ in steel can help in increasing the depth of hardness.

  10. A.
    nickel
    B.
    chromium
    C.
    vanadium
    D.
    tungsten

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  11. Which of the following has the highest compressive strength ?

  12. A.
    Wrought iron
    B.
    Cast iron
    C.
    Mild steel
    D.
    High carbon steel

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  13. Zinc is not used

  14. A.
    for producing zinc base die casting alloys.
    B.
    in its oxide form as pigments.
    C.
    as anode for corrosion prevention in boiler.
    D.
    as an alloying element in various bronzes.

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  15. Refined acetic acid storage vessel are made of

  16. A.
    copper
    B.
    aluminium
    C.
    high carbon steel
    D.
    nickel

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  17. Addition of __________ to the steel helps in increasing the residual magnetism in steel used for making magnets.

  18. A.
    chromium
    B.
    nickel
    C.
    tungsten
    D.
    cobalt

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  19. Constantan is an alloy of

  20. A.
    Cu (55%) & Sn (45%).
    B.
    Cu (55%) & Ni (45%).
    C.
    Pt (95%) & Rh (10%).
    D.
    Fe (80%) & Ni (20%).

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