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Chemical Engineering :: Materials and Construction

Materials and Construction - Section 1
Materials and Construction - Section 2
Materials and Construction - Section 3
Materials and Construction - Section 4
Materials and Construction - Section 5
Materials and Construction - Section 6
Materials and Construction - Section 7
Materials and Construction - Section 8
Materials and Construction - Section 9
Materials and Construction - Section 10
Materials and Construction - Section 11

  1. Aqueous nitric acid is stored in

    2. A.
    steel drum
    B.
    stainless steel vessel
    C.
    cast iron vessel lined with acid-proof masonry brick
    D.
    cast iron vessel

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  2. Addition of tungsten to steel imparts

    3. A.
    magnetic properties
    B.
    cutting hardness
    C.
    corrosion resistance
    D.
    ductility

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  3. Hot working of lead is carried out at

    4. A.
    75° C
    B.
    373° K
    C.
    150° C
    D.
    room temperature

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  4. Which of the following is a light alloy ?

    5. A.
    Monel metal
    B.
    Dow metal
    C.
    German silver
    D.
    Babbit metal

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  5. Thermosetting resins are those polymers, which

    6. A.
    do not increase in plasticity with rise in temperature.
    B.
    allow slip to occur between molecules.
    C.
    do not take on a permanent set.
    D.
    none of these.

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  6. Ceramic materials

    7. A.
    are exemplified by clay and mica.
    B.
    are poor electrical conductors due to lack of free electrons.
    C.
    never exhibit polymorphism.
    D.
    all (a), (b) and (c).

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  7. Light weight metallic alloy used in aircraft industry is

    8. A.
    aluminium
    B.
    high silicon (14%) iron
    C.
    duralumin
    D.
    phosphor bronze

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  8. Which of the following is an alloy of nickel and copper ?

    9. A.
    Hastelloy
    B.
    Duriron
    C.
    Monel
    D.
    Inconel

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  9. Gunmetal and bronze are not corroded by the action of

    10. A.
    wet chlorine.
    B.
    synthetic detergent solution.
    C.
    hydrochloric acid (10%).
    D.
    nitric acid (< 25%).

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  10. Atmospheric corrosion of metals result from their

    11. A.
    slow oxidation
    B.
    fast oxidation
    C.
    fast hydration
    D.
    slow dehydration

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