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Chemical Engineering :: Materials and Construction

  1. Phenol is not shipped in

  2. A.
    nickel lined steel tank cars.
    B.
    galvanised or tin lined drums.
    C.
    boxed glass carboys.
    D.
    cast iron containers.

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  3. To improve the machinability of steel, it is generally subjected to

  4. A.
    spheroidising
    B.
    tempering
    C.
    normalising
    D.
    annealing

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  5. Glass lined vessels are not used for handling

  6. A.
    dilute H2SO4
    B.
    dilute HNO3
    C.
    dilute HCI
    D.
    hydroflouric acid

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  7. Hardening of steel is not possible unless it is heated __________ critical point.

  8. A.
    above the highest
    B.
    above the lowest
    C.
    between the first & second
    D.
    between the second & third

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  9. Hydrochloric acid absorber in made of

  10. A.
    cast iron
    B.
    mild steel
    C.
    karbate
    D.
    stainless steel

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  11. Pick out the wrong statement.

  12. A.
    Tin can be readily and very easily drawn into very fine wire.
    B.
    Tin can be severely cold worked without the necessity of annealing due to its low recrystallisation temperature.
    C.
    Tin exists in two allotropic forms.
    D.
    The predominant use of tin is in the form of coating for steel & copper alloys.

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  13. Thermometer bulb & capillary in case of mercury filled pressure spring expansion thermometer is normally made of __________ as mercury does not amalgamate with it.

  14. A.
    copper
    B.
    copper alloys
    C.
    stainless steel
    D.
    monel

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  15. Presence of silicon in steel

  16. A.
    is in the form of free Si.
    B.
    indicates that steel is not deoxidised properly.
    C.
    decreases the blow holes formation tendency in castings.
    D.
    none of these.

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  17. Pick the odd man out of the following.

  18. A.
    Calorising
    B.
    Pack carburising
    C.
    Nitriding
    D.
    Cyaniding

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  19. Cold work tool steel should have

  20. A.
    high toughness
    B.
    poor hardenability
    C.
    high wear resistance
    D.
    all (a), (b) & (c)

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