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Chemical Engineering :: Chemical Process

  1. Unsaturated oils compared to saturated oils have

  2. A.

     Lower melting point & higher reactivity to oxygen

    B.

     Higher melting point & higher reactivity to oxygen

    C.

     Lower melting point & lower reactivity to oxygen

    D.

     Higher melting point & lower reactivity to oxygen


  3. Superior quality laboratory apparatus is made of the __________ glass having low thermal co-efficient of expansion & high chemical resistance.

  4. A.

     Flint

    B.

     Soda

    C.

     Pyrex

    D.

     Potash


  5. DDT should not be allowed to come in contact with iron (during its manufacture) to

  6. A.

     Avoid its decomposition

    B.

     Prevent sulphonation of the monochlorobenzene by the acid catalyst

    C.

     Achieve non-hygroscopic property

    D.

     None of these


  7. __________ iron is the purest form of iron.

  8. A.

     Cast

    B.

     Wrought

    C.

     Pig

    D.

     High silicon


  9. Liquefaction of gases can not be done by

  10. A.

     Exchange of heat with colder stream

    B.

     Adiabatic expansion through a throttle valve (Joule-Thomson expansion)

    C.

     Merely compressing it beyond critical pressure

    D.

     Adiabatic expansion against a piston or in a turbine


  11. Function of thinner in a paint is to

  12. A.

     Accelerate the oxidation of oil

    B.

     Prevent gelling of the paint

    C.

     Suspend pigments & dissolve film forming materials

    D.

     Form a protective film


  13. __________ process is used for the manufacture of sodium carbonate by ammonia soda process.

  14. A.

     Ostwald's

    B.

     Bosch

    C.

     Solvay

    D.

     Haber's


  15. __________ acid is the main constituent of cotton seed oil.

  16. A.

     Acetic

    B.

     Linoleic

    C.

     Palmitic

    D.

     Oleic


  17. Which one of the following is not likely to be a constituent of vegetable oils?

  18. A.

     Citric acid

    B.

     Oleic acid

    C.

     Stearic acid

    D.

     Glycerol


  19. Main constituents of cotton fiber is

  20. A.

     Lignin

    B.

     Cellulose

    C.

     Starch

    D.

     Gelatine