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Chemical Engineering :: Materials and Construction

  1. Acetaldehyde is shipped in __________ drums.

  2. A.
    cast iron
    B.
    steel
    C.
    aluminium
    D.
    either (b) & (c)

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  3. Monel metal is an alloy of

  4. A.
    molybdenum and nickel.
    B.
    nickel and copper.
    C.
    molybdenum and aluminium.
    D.
    molybdenum and zinc.

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  5. German silver is an alloy of copper, nickel and

  6. A.
    zinc
    B.
    silver
    C.
    tin
    D.
    lead

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  7. The presence of impurities in iron

  8. A.
    increases its melting point.
    B.
    does not affect its melting point.
    C.
    decreases its melting point.
    D.
    makes it malleable.

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  9. Which of the following alloy steels has the energy saving properties making it suitable for use in electrical machines ?

  10. A.
    Silicon steel
    B.
    Chromium steel
    C.
    Molybdenum steel
    D.
    None of these

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  11. Visco-elastic behaviour of materials which is time dependent is common in

  12. A.
    plastics
    B.
    crystalline solid
    C.
    non-crystalline solids
    D.
    non-crystalline organic polymer

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  13. Which of the following is not an alloy of copper ?

  14. A.
    Muntz metal
    B.
    Admirability gun metal
    C.
    German silver
    D.
    Pewter metal

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  15. Which of the following is the most prone to atmospheric corrosion ?

  16. A.
    Silver
    B.
    Iron
    C.
    Tin
    D.
    Copper

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  17. As the impurities are oxidised, the melting point of iron

  18. A.
    decreases.
    B.
    remains unchanged.
    C.
    increases.
    D.
    may increase or decrease ; unpredictable.

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  19. In a plate type heat exchanger, heat transfer plates are never made of

  20. A.
    stainless steel
    B.
    cast iron
    C.
    titanium
    D.
    hastealloy C

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