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Chemical Engineering :: Materials and Construction

  1. Sulphur melting pit in the sulphuric acid plant is made of

  2. A.
    lead lined stainless steel.
    B.
    cast iron.
    C.
    steel or cement-brick lined.
    D.
    hard wood.

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  3. The hardest material just prior to diamond in Mho's scale is

  4. A.
    topax
    B.
    carborundum
    C.
    corrundum
    D.
    calcite

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  5. Percentage elongation of a material is a measure of its

  6. A.
    ductility
    B.
    brittleness
    C.
    toughness
    D.
    malleability

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  7. Chlorination of benzene is done to produce benzene hexachloride (a pesticide) in a photochemical reactor lined with

  8. A.
    karbate
    B.
    lead or glass
    C.
    fireclay bricks
    D.
    PVC

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  9. Heavy duty bearings are usually made of

  10. A.
    white metal
    B.
    phosphorous bronze
    C.
    monel
    D.
    zinc

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  11. Dielectric strength of a material is

  12. A.
    its energy stroage capacity.
    B.
    a magnetic property.
    C.
    its capacity to resist the flow of current.
    D.
    its capacity to withstand high voltage.

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  13. Which of the following stainless steels is non-magnetic ?

  14. A.
    Ferritic
    B.
    Martensitic
    C.
    Austenitic
    D.
    None of these

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  15. 18-4-1 high speed steel contains 18%, 4% and 1% respectively of

  16. A.
    tungsten, vanadium and chromium
    B.
    tungsten, chromium and vanadium
    C.
    vanadium, chromium and tungsten
    D.
    chromium, tungsten and vanadium

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  17. Aluminium as a material of construction suffers from the disadvantage of

  18. A.
    very high cost.
    B.
    rather low tensile strength.
    C.
    very low strength to weight ratio.
    D.
    scarce availability.

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  19. Babbit metal used for bearings is a____base alloy.

  20. A.
    tin
    B.
    lead
    C.
    aluminium
    D.
    copper

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