Home / Chemical Engineering / Chemical Process :: Section-15

Chemical Engineering :: Chemical Process

  1. Use of hydrated lime in water treatment

  2. A.

     Before filtration, reduces the bacterial load on filters

    B.

     After filtration, combats the corrosive-ness of water due to the presence of O₂ & CO₂

    C.

     Is to adjust the pH value

    D.

     All of the above

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. The drug used in contraceptives is

  4. A.

     Sulphadizene

    B.

     Mestranol

    C.

     Methyl salicylate

    D.

     Pencillin

    View Answer

    Workspace

    Discuss Discuss in Forum


  5. Nitrile rubber is produced by the polymerisation of

  6. A.

     Acrylonitrile and butadiene

    B.

     Acrylonitrile and styrene

    C.

     Isobutylene and isoprene

    D.

     None of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. Helium is produced on commercial scale from

  8. A.

     Air

    B.

     Natural gas

    C.

     Coke oven gas

    D.

     None of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. __________ is used as a flux in the extraction of iron from iron ore (hametite) in blast furnace.

  10. A.

     Bauxite

    B.

     Limestone

    C.

     Quartz

    D.

     Manganese

    View Answer

    Workspace

    Discuss Discuss in Forum


  11. Ore concentration by froth floatation utilises the __________ of ore particles.

  12. A.

     Density difference

    B.

     Wetting characteristics

    C.

     Terminal velocities

    D.

     None of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  13. Separation of fresh water from sea water can be done by the __________ operation.

  14. A.

     Osmosis

    B.

     Reverse osmosis

    C.

     Absorption

    D.

     Adsorption

    View Answer

    Workspace

    Discuss Discuss in Forum


  15. Bisphenol A is produced by the condensation of acetone with

  16. A.

     Formaldehyde

    B.

     Ethyl alcohol

    C.

     Diethyl ether

    D.

     Phenol

    View Answer

    Workspace

    Discuss Discuss in Forum


  17. Which of the following is a disacchride?

  18. A.

     Sucrose

    B.

     Glucose

    C.

     Starch

    D.

     Maltose

    View Answer

    Workspace

    Discuss Discuss in Forum


  19. Sucrose content in the raw juice extracted from sugar cane is about __________ percent.

  20. A.

     1 - 2

    B.

     15 - 20

    C.

     50 - 60

    D.

     80 - 85

    View Answer

    Workspace

    Discuss Discuss in Forum