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Chemical Engineering :: Chemical Process

  1. Which is the most efficient absorbant for SO₃ out of the following?

  2. A.

     20% oleum

    B.

     65% oleum

    C.

     78%H₂SO₄

    D.

     98%H₂SO₄

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  3. Starting raw material for the manufacture of alum is

  4. A.

     Alumina

    B.

     Gypsum

    C.

     Bauxite

    D.

     Ammonium bicarbonate

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  5. Frasch process is for

  6. A.

     Making oxygen

    B.

     Producing helium

    C.

     Mining sulphur

    D.

     Making nitrogen

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  7. Very fine suspended and colloidal impurities are removed from water by a process called

  8. A.

     Sedimentation

    B.

     Coagulation

    C.

     Disinfection

    D.

     Softening

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  9. Fumigant insecticides

  10. A.

     Kill insects, when they eat it

    B.

     Emit poisonous vapour

    C.

     Are absorbed throughout the plant

    D.

     None of these

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  11. Fusel oil is a/an

  12. A.

     Essential oil

    B.

     Extract from medicinal herbs

    C.

     Mixture of higher molecular weight alcohols (a by-product obtained during production of alcohol from molasses)

    D.

     None of these

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  13. Which of the following is a constituent of coffee?

  14. A.

     Caffeine

    B.

     Nicotine

    C.

     Calgon

    D.

     Lignin

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  15. Which of the following is an endothermic reaction?

  16. A.

     Absorption of SO₃ in 98% H₂SO₄

    B.

     C + H₂O = CO + H₂

    C.

     Thermal dissociation of iron pyrites

    D.

     Both B and C

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  17. Salt is added in the kettle during soap manufacture to separate

  18. A.

     Soap from lye

    B.

     Glycerine from lye

    C.

     The metallic soap

    D.

     The unsaponified fat from soap

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  19. High magnesia lime is added to hot sugar cane juice (during the manufacture of sugar) to

  20. A.

     Flocculate the impurities

    B.

     Facilitate fast filtration

    C.

     Both A and B

    D.

     Neither A nor B

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