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Chemical Engineering :: Materials and Construction

  1. Water gas generator is made of

  2. A.
    carbon steel-brick lined
    B.
    stainless steel-lead lined
    C.
    cast iron
    D.
    high carbon steel-procelain lined

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  3. The digester of a Gobar gas plant is a

  4. A.
    mild steel drum
    B.
    stainless steel vessel
    C.
    masonry well
    D.
    cast iron vessel

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  5. The ability of a material to offer resistance to scratching or indentation is a measure of its

  6. A.
    brittleness
    B.
    toughness
    C.
    hardness
    D.
    resilience

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  7. Brine (15% concentration) can be stored in a vessel made of

  8. A.
    monel
    B.
    karbate
    C.
    cast iron
    D.
    none of these

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  9. Generally __________ are subjected to galvanising (i.e., zinc coating).

  10. A.
    non-ferrous metals
    B.
    non-metals
    C.
    low carbon steels
    D.
    stainless steel

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  11. A material no longer behaves elastically beyond

  12. A.
    plastic limit
    B.
    limiting load
    C.
    elastic limit
    D.
    breaking load

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  13. When the steel is subjected to normalising, its __________ decreases.

  14. A.
    yield point
    B.
    ductility
    C.
    ultimate tensile strength (UTS)
    D.
    none of these

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  15. The most commonly used resin for making reinforced plastic is

  16. A.
    unsaturated polyester
    B.
    polypropylene
    C.
    polyurathane
    D.
    nylon-6

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  17. Most suitable material for high pressure vessel operating at 500 atm. and 500° C is

  18. A.
    molybdenum stainless steel.
    B.
    18/8 stainless steel.
    C.
    mild steel.
    D.
    high silicon iron (14% Si).

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  19. Brinell Hardness Number (BHN) for talc is approximately in the range of

  20. A.
    1-5
    B.
    20-30
    C.
    100 -150
    D.
    200 - 250

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