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Chemical Engineering :: Chemical Process

  1. Fusion of bauxite and __________ produces high alumina cement.

  2. A.

     Alum

    B.

     Limestone

    C.

     Coke

    D.

     Quartz


  3. Fusion of limestone and __________ produces high alumina cement.

  4. A.

     Sand

    B.

     Bauxite

    C.

     Quicklime

    D.

     Calcite


  5. Which of the following, when pyrolysed, produces perchloro-ethylene?

  6. A.

     Ethylene dichloride

    B.

     Chlorobenzene

    C.

     Carbon tetrachloride

    D.

     Chlorinated paraffin


  7. Naphthalene is removed from coke oven gas by

  8. A.

     Adsorbing on palladium

    B.

     Absorbing in ethanolamine

    C.

     Scrubbing with wash oil

    D.

     Passing it through electrostatic precipitator


  9. Hydrophilic group of a soap or detergent solution is

  10. A.

     Water hating

    B.

     Soil loving

    C.

     Water loving

    D.

     None of these


  11. __________ is obtained as a by-product in the manufacture of sodium hydroxide using brine.

  12. A.

     Chlorine

    B.

     Ammonium chloride

    C.

     Sodium carbonate

    D.

     Sodium bi-carbonate


  13. High temperature carbonisation of coal takes place at __________ °C.

  14. A.

     2000

    B.

     700

    C.

     1100

    D.

     < 500


  15. Low temperature carbonisation of coal takes place at __________ °C.

  16. A.

     300

    B.

     1100

    C.

     700

    D.

     900


  17. Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is __________ °C.

  18. A.

     25

    B.

     60-70

    C.

     150-200

    D.

     250-300


  19. Comparing sulphate process with sulphite process, we find that __________ in the later.

  20. A.

     Both temperature & pressure in the former is less than that

    B.

     Both temperature & pressure in the former is more than that

    C.

     Temperature is more in the former whereas pressure is more

    D.

     Pressure is more in the former whereas temperature is less