Home / Chemical Engineering / Chemical Process :: Section 12

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.

    View Answer

    Workspace

    Discuss Discuss in Forum


  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

    View Answer

    Workspace

    Discuss Discuss in Forum


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

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

    View Answer

    Workspace

    Discuss Discuss in Forum


  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

    View Answer

    Workspace

    Discuss Discuss in Forum


  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).

    View Answer

    Workspace

    Discuss Discuss in Forum


  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.

    View Answer

    Workspace

    Discuss Discuss in Forum


  13. Bleaching of paper pulp is done with

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

    View Answer

    Workspace

    Discuss Discuss in Forum


  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.

    View Answer

    Workspace

    Discuss Discuss in Forum


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

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

    View Answer

    Workspace

    Discuss Discuss in Forum


  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

    View Answer

    Workspace

    Discuss Discuss in Forum