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Chemical Engineering :: Chemical Process

  1. Which of the following is the most adverse factor challenging the choice of mercury electrolytic cell process for the production of caustic soda?

  2. A.

     High cost of mercury

    B.

     High specific gravity of mercury

    C.

     Non-availability of high purity mercury

    D.

     Pollution of water stream by mercury


  3. Thermosetting plastic materials

  4. A.

     Can be repeatedly melted

    B.

     Is useful for melt casting

    C.

     Can not be melted after forming

    D.

     Is useful for spinning


  5. Industrial production of chloroform requires acetone and

  6. A.

     Phosgene

    B.

     Calcium hypochlorite

    C.

     Chlorine

    D.

     Ammonium chloride


  7. Yellow phosphorus is transported under

  8. A.

     Air

    B.

     Water

    C.

     Nitrogen

    D.

     Helium


  9. SO₂ is bubbled through hot sugar cane juice to

  10. A.

     Act as an acidifying agent

    B.

     Increase its concentration

    C.

     Increase the amount of molasses

    D.

     Increase the crystal size


  11. Hydrazine is largely used

  12. A.

     As a starting material for 'hypo'

    B.

     In photographic industry

    C.

     As rocket fuel

    D.

     In printing industry


  13. Hydrogenation of oil does not

  14. A.

     Remove double bonds

    B.

     Raise its melting point

    C.

     Improve its resistance to oxidation

    D.

     None of these


  15. Hydrolysis of sugar is called

  16. A.

     Hydration

    B.

     Inversion

    C.

     Esterification

    D.

     None of these


  17. Ethyl alcohol cannot be produced

  18. A.

     From waste sulphite substrate of paper mills

    B.

     By esterification and hydroloysis of ethylene

    C.

     From molasses

    D.

     None of these


  19. Pencillin, an antibiotic drug was discovered by

  20. A.

     Alexender

    B.

     Flaming

    C.

     Dr. Zivago

    D.

     None of these