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Chemical Engineering :: Chemical Process

  1. Which oil is preferred for paint manufacture?

  2. A.

     Drying oil

    B.

     Non-drying oil

    C.

     Semi-drying oil

    D.

     Saturated oil


  3. Which of the following is not a pyrite ore?

  4. A.

     Celestite

    B.

     Galena

    C.

     Gypsum

    D.

     Siderite


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

  6. A.

     20% oleum

    B.

     65% oleum

    C.

     78%H₂SO₄

    D.

     98%H₂SO₄


  7. Starting raw material for the manufacture of alum is

  8. A.

     Alumina

    B.

     Gypsum

    C.

     Bauxite

    D.

     Ammonium bicarbonate


  9. Frasch process is for

  10. A.

     Making oxygen

    B.

     Producing helium

    C.

     Mining sulphur

    D.

     Making nitrogen


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

  12. A.

     Sedimentation

    B.

     Coagulation

    C.

     Disinfection

    D.

     Softening


  13. Fumigant insecticides

  14. A.

     Kill insects, when they eat it

    B.

     Emit poisonous vapour

    C.

     Are absorbed throughout the plant

    D.

     None of these


  15. Fusel oil is a/an

  16. 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


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

  18. A.

     Caffeine

    B.

     Nicotine

    C.

     Calgon

    D.

     Lignin


  19. Which of the following is an endothermic reaction?

  20. A.

     Absorption of SO₃ in 98% H₂SO₄

    B.

     C + H₂O = CO + H₂

    C.

     Thermal dissociation of iron pyrites

    D.

     Both B and C