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Chemical Engineering :: Chemical Process

  1. Glycerine is a by-product of the __________ industry.

  2. A.

     Soap

    B.

     Detergent

    C.

     Oil hydrogenation

    D.

     Paint


  3. Sudden temperature fluctuation does not affect pyrex glass, because of its

  4. A.

     Low co-efficient of expansion

    B.

     High co-efficient of expansion

    C.

     High melting point

    D.

     Both B and C


  5. Starting material for the production of butadiene in India is

  6. A.

     Naphthalene

    B.

     Benzol

    C.

     Ethyl alcohol

    D.

     Phthalic anhydride


  7. Commercial production of calcium carbide requires limestone and __________ as raw materials.

  8. A.

     Coke

    B.

     Sand

    C.

     Soda ash

    D.

     Fuel oil


  9. Paper pulp produced by kraft/sulphate process is

  10. A.

     Bleached easily

    B.

     Dull white in color

    C.

     Strong fibrous

    D.

     Dark colored


  11. Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on

  12. A.

     Slaked lime

    B.

     Soda lime

    C.

     Calcium perchlorate

    D.

     None of these


  13. Good quality of edible salt is obtained from brine by the process of

  14. A.

     Solar evaporation

    B.

     Vacuum evaporation

    C.

     Freeze drying

    D.

     Electrolysis


  15. Carboxymethyl cellulose (CMC) is added in detergents to act as a/an

  16. A.

     Surfactant

    B.

     Builder

    C.

     Optical brightening agent

    D.

     Anti soil redeposition agent


  17. Enzymes are organic catalysts used in the __________ reactions.

  18. A.

     Chemical

    B.

     Biochemical

    C.

     Photochemical

    D.

     Electrochemical


  19. The catalyst used in the manufacture of DDT is

  20. A.

     Alumina

    B.

     Silica

    C.

     20% oleum

    D.

     Aluminium chloride