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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


  3. The drug used in contraceptives is

  4. A.

     Sulphadizene

    B.

     Mestranol

    C.

     Methyl salicylate

    D.

     Pencillin


  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


  7. Helium is produced on commercial scale from

  8. A.

     Air

    B.

     Natural gas

    C.

     Coke oven gas

    D.

     None of these


  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


  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


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

  14. A.

     Osmosis

    B.

     Reverse osmosis

    C.

     Absorption

    D.

     Adsorption


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

  16. A.

     Formaldehyde

    B.

     Ethyl alcohol

    C.

     Diethyl ether

    D.

     Phenol


  17. Which of the following is a disacchride?

  18. A.

     Sucrose

    B.

     Glucose

    C.

     Starch

    D.

     Maltose


  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