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Chemical Engineering :: Chemical Process

  1. Process conditions in fermentator used for production of penicillin is

  2. A.
    25°C, 2 atm.
    B.
    50°C, l0 atm.
    C.
    30°C, 200 mm Hg (absolute).
    D.
    90°C, 45 atm.

  3. Platinum is a versatile catalyst for many processes in chemical industries. It is highly prone to be poisoned by the presence of

  4. A.
    carbon
    B.
    arsenic
    C.
    lead
    D.
    sulphur

  5. Sodium chloride content in sea water is about __________ gms/litre.

  6. A.
    2
    B.
    10
    C.
    25
    D.
    50

  7. Fluorescent dyes are added in detergents to

  8. A.
    act as fabric brightener (by converting ultraviolet light to visible light) thereby improving the whiteness appearance of white fabrics.
    B.
    attain distinctiveness from other brands.
    C.
    act as tarnish inhibitor for metals like German silver.
    D.
    none of these

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

  10. A.
    flocculate the impurities.
    B.
    facilitate fast filtration.
    C.
    both (a) and (b).
    D.
    neither (a) nor (b).

  11. Polyvinyl chloride (PVC) is

  12. A.
    a thermosetting material.
    B.
    a condensation polymerisation product.
    C.
    made by employing emulsion polymerisation.
    D.
    none of these.

  13. Bleaching of paper pulp is done with

  14. A.
    activated clay
    B.
    bromine
    C.
    chlorine or chlorine dioxide
    D.
    magnesium sulphite

  15. Pick out the wrong statement.

  16. A.
    Kraft method of pulp manufacture can process all types of fibrous raw materials.
    B.
    Digestion time for bagasse is less than that for wood base materials.
    C.
    Both temperature and pressure in the digestor is less in case of the sulphite method as compared to that in the sulphate method.
    D.
    none of these.

  17. Isopropyl benzene produced by alkylation of benzene with propylene is known as

  18. A.
    neoprene
    B.
    cumene
    C.
    gelatin
    D.
    mercaptans

  19. Consider the production of ammonia from methene and air as raw materials. The catalyst used are: (i) __________ for steam reforming of methane and (ii) __________ for ammonia synthesis.

  20. A.
    i - Ni/Al2O3; ii - Cu - ZnO/Al2O3
    B.
    i - Fe/Al2O3; ii - Cu - ZnO/Al2O3
    C.
    i - Ni/Al2O3; ii - Fe/Al2O3
    D.
    i - Fe/Al2O3; ii - Ni/Al2O3