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Chemical Engineering :: Chemical Engineering Basics-2

  1. Which of the following fastening devices has its both ends threaded?

  2. A.

     Bolt

    B.

     Stud

    C.

     Set screw

    D.

     Split nut


  3. Out of the following, __________ waves have the largest wavelength.

  4. A.

     Radio

    B.

     Light

    C.

     X-ray

    D.

     Gamma-ray


  5. Which of the following metals can be extracted from its ore by both pyrometallur-gical as well as hydrometallurgical methods ?

  6. A.

     Copper

    B.

     Zinc

    C.

     Both A & B

    D.

     Neither A nor B


  7. One of the methods of purification of leach liquor is ion exchange, which involves

  8. A.

     Exchange between two liquid phases

    B.

     Exchange between a gaseous phase and a liquid phase

    C.

     Exchange between a liquid phase and an organic resin phase

    D.

     Exchange between a solid phase and a gas phase


  9. Which of the following forces does not act on a fluid at rest?

  10. A.

     Viscous force

    B.

     Gravity force

    C.

     Hydrostatic force

    D.

     Surface tension force


  11. Permanent set in a material is produced by subjecting it to

  12. A.

     Triaxial loading

    B.

     Fatigue loading

    C.

     Stresses beyond the elastic limit

    D.

     Tensile & compressive loads simultaneously


  13. Cadmium in zinc leach liquor is removed by cementation using

  14. A.

     Zinc

    B.

     Iron

    C.

     Nickel

    D.

     Copper


  15. Holes for rivetting purposes should be preferably made by

  16. A.

     Cutting torch

    B.

     Drilling

    C.

     Punching

    D.

     None of these


  17. Exposure to __________ accelarates the degradation of plastics.

  18. A.

     Ultraviolet radiation

    B.

     High atmospheric temperature

    C.

     High ambient temperature

    D.

     Damp atmosphere


  19. Which of the following equipments is used for liquid dispersion?

  20. A.

     Packed column

    B.

     Venturi scrubber

    C.

     Bubble cap plate column

    D.

     Wetted wall column