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Chemical Engineering :: Materials and Construction

  1. Carbon percentage is the same in cast iron and

  2. A.
    wrought iron
    B.
    pig iron
    C.
    mild steel
    D.
    high silicon (14%) iron

  3. Pick out the wrong statement.

  4. A.
    Bronze is an alloy of copper & tin.
    B.
    Brass is an alloy of copper & zinc.
    C.
    The alloy named 'German silver' does not contain any silver.
    D.
    The ability of a material to fracture without appreciable deformation is called its ductility.

  5. Which of the following has the highest density and the lowest melting point ?

  6. A.
    Stainless steel
    B.
    Titanium
    C.
    Lead
    D.
    Aluminium

  7. In order to be called steel, an alloy should have iron percentage greater than

  8. A.
    80
    B.
    70
    C.
    90
    D.
    50

  9. Nickel is a constituent of

  10. A.
    bronze
    B.
    solder
    C.
    duralumin
    D.
    monel metal

  11. Soap kettle used in the production of laundry soap is made of

  12. A.
    steel with top section nickel clad or stainless steel
    B.
    cast iron
    C.
    nickel
    D.
    concrete

  13. Nickel made/clad equipments are suitable for handling

  14. A.
    ammonia (both aqueous & anhydrous).
    B.
    fruit juices, milk & its products and caustic soda solution.
    C.
    nitric acid & hydrochloric acid (conc).
    D.
    sulphuric acid (conc).

  15. Tubes of multiple effect evaporator used for concentration of sugar cane juice are made of

  16. A.
    nickel
    B.
    copper
    C.
    stainless steel
    D.
    brass

  17. In hot wire aneomometer used for gas flow measurement, the wire is normally made of

  18. A.
    copper
    B.
    platinum
    C.
    constantan
    D.
    chromium

  19. The heat treatment process to which castings and the steel balls produced by cold heading are subjected is

  20. A.
    tempering
    B.
    normalising
    C.
    annealing
    D.
    none of these