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Chemical Engineering :: Chemical Process

  1. Maleic anhydride is produced by catalytic oxidation of

  2. A.

     Toluene

    B.

     Ethyl alcohol

    C.

     Naphthalene

    D.

     Benzene


  3. Which of the following is not a product of coal tar distillation?

  4. A.

     Anthracene

    B.

     Cresote oil

    C.

     Carbolic oil

    D.

     None of these


  5. Mercury electrolytic cells are preferred over diaphragm electrolytic cell (for production of caustic soda), as it

  6. A.

     Has larger production capacity per unit cell

    B.

     Consumes less power per ton of Cl₂ produced

    C.

     Produces high purity (70%) caustic soda directly

    D.

     All of the above


  7. Pick out the wrong statement.

  8. A.

     Cold rubber (SBR) is superior as compared to hot rubber (SBR)

    B.

     Polymerisation temperature can modify the properties of SBR

    C.

     Production of cold SBR employs lower pressure as compared to that of hot SBR

    D.

     None of these


  9. __________ of quicklime produces slaked lime.

  10. A.

     Hydration

    B.

     Dehydration

    C.

     Hydrogenation

    D.

     None of these


  11. Oils are partially hydrogenated (not fully) to manufacture vanaspati, because fully saturated solidified oils

  12. A.

     Cause cholesterol build up and blood clotting

    B.

     Are prone to rancid oxidation

    C.

     Always contain some amount of nickel (as their complete removal is very difficult)

    D.

     Have affinity to retain harmful sulphur compounds


  13. Which of the following fuel gases contains maximum amount of carbon monoxide?

  14. A.

     Coke oven gas

    B.

     Water gas

    C.

     Blast furnace gas

    D.

     L.D. converter gas


  15. Potassium is kept & transported under

  16. A.

     Water

    B.

     Liquid ammonia

    C.

     Kerosene oil

    D.

     Alcohol


  17. Sulphur addition in soap is done to

  18. A.

     Improve the soap texture

    B.

     Cure pimples & dandruff

    C.

     Fasten lather formation

    D.

     Increase its cleansing action


  19. Bromides contained in hot mother liquor is treated with __________ during manufacture of bromine from sea water.

  20. A.

     SO₃

    B.

     Cl₂

    C.

     NH₃

    D.

     SO₂