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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

  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

  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

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

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

  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

  11. A material no longer behaves elastically beyond

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

  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

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

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

  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).

  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