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Chemical Engineering :: Chemical Process

  1. A substance produced by a living organism and capable of anti-microbial activity is called a/an

  2. A.
    antibiotic
    B.
    antiseptic
    C.
    disinfectant
    D.
    none of these

  3. Deaeration of water in its treatment is necessary, as it

  4. A.
    minimises its turbidity.
    B.
    helps in controlling its taste and odour.
    C.
    minimises its corrosiveness.
    D.
    none of these.

  5. Hydrochloric acid is also known as

  6. A.
    oil of vitriol
    B.
    muriatic acid
    C.
    strong organic acid
    D.
    green acid

  7. Aryl benzene sulphonate (ABS) is a

  8. A.
    detergent.
    B.
    plasticiser for unsaturated polyester.
    C.
    starting material for the synthesis of glycerine.
    D.
    coating ingredient for photographic film.

  9. Adipic acid is an intermediate in the manufacture of

  10. A.
    perspex
    B.
    nylon-66
    C.
    polystyrene
    D.
    bakelite

  11. The temperature in the calcium carbide furnace is __________ °C.

  12. A.
    200-300
    B.
    700-850
    C.
    2000-2200
    D.
    4000-4500

  13. Vinyl chloride (CH2 = CH.Cl) is produced by the thermal pyrolysis of ethylene dichloride at a pressure & temperature of

  14. A.
    4 kgf/cm2 & 500°C.
    B.
    10 kgf/cm2 & 1000°C.
    C.
    40 kg/cm2 & 200°C.
    D.
    100 kgi/cm2 & 500°C.

  15. Soaps remove dirt by

  16. A.
    increasing the surface tension.
    B.
    decreasing wettability.
    C.
    supplying hydrophyllic group.
    D.
    none of these.

  17. Which of the following additives/water proofing agents is added to lower the hydrophilic (moisture loving) characteristic of cement ?

  18. A.
    Xanthates
    B.
    Stearic acid
    C.
    Calcium & aluminium stearate
    D.
    Formic acid

  19. Chemical name of soda ash is

  20. A.
    sodium bicarbonate
    B.
    sodium thiosulphate
    C.
    potassium carbonate
    D.
    none of these