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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.

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

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

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

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

  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

  9. Heavy duty bearings are usually made of

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

  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.

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

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

  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

  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.

  19. Babbit metal used for bearings is a____base alloy.

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