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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. Lead

    2. A.
    is the hardest metal in common use.
    B.
    is the lightest metal in common use.
    C.
    can not be scratched by finger nails.
    D.
    can not be work hardened.

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  2. Photographic plates are coated with

    3. A.
    silver nitrate
    B.
    silver halide
    C.
    calcium silicate
    D.
    metallic silver

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  3. Cast iron has

    4. A.
    very high tensile strenth.
    B.
    high ductility.
    C.
    high malleability.
    D.
    elastic limit close to ultimate breaking strength.

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  4. Locomotive boiler tubes are made of __________ alloys.

    5. A.
    arsenic copper
    B.
    magnesium
    C.
    aluminium
    D.
    nickel

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  5. Slow and progressive deformation of a material with time under constant stress is called

    6. A.
    creep
    B.
    erosion
    C.
    resilience
    D.
    none of these

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  6. Which of the following heat treatment processes is used for softening the hardened material ?

    7. A.
    Normalising
    B.
    Tempering
    C.
    Annealing
    D.
    None of these

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  7. Which of the following mechanical properties of a material is most structure insensitive ?

    8. A.
    Modulus of elasticity (young's modulus).
    B.
    Toughness.
    C.
    Percentage reduction of area.
    D.
    Tensile strength.

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  8. Mercury is transported in metal containers made of

    9. A.
    aluminium
    B.
    iron
    C.
    lead
    D.
    nickel

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  9. Which of the following would not be a suitable material of construction for handling aqueous hydrofluoric acid (HF) at 100°C ?

    10. A.
    Monel
    B.
    Stainless steel
    C.
    Graphite
    D.
    Kel-F and teflon

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  10. Which of the following has the least carbon percentage ?

    11. A.
    Low carbon steel
    B.
    Mild steel
    C.
    Wrought iron
    D.
    White cast iron

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