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The biochemical treatment applied to sewage effluents is a process of

A. Dehydration

B. Reduction

C. Oxidation

D. Polymerisation

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  1. The main aim behind cooling the digested chip at the bottom portion of the digestor by injecting cold…
  2. Use of chlorine in the treatment of sewage
  3. Hydrogenation of oil/fat does not
  4. Very fine suspended and colloidal impurities are removed from water by a process called
  5. Fats as compared to oils have
  6. Ethylene oxide is produced by oxidation of ethylene in presence of AgO catalyst at
  7. Sodium bisulphite is used for __________ water.
  8. The process used for the manufacture of ethyl alcohol from molasses is
  9. Nylon-66 is so named because the
  10. The main use of activated carbon in water treatment is to control
  11. Margarine is a/an
  12. Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.
  13. Fatty material used in soap making is
  14. Chloramines are used in water treatment for
  15. Coke oven gas consists mainly of
  16. Which one of the following is not likely to be a constituent of vegetable oils?
  17. Hydrocyanic acid (HCN) is used as an insecticide for
  18. Pick out the wrong statement.
  19. Producer gas consists mainly of
  20. Setting of plaster of Paris is accompanied with
  21. __________ is used as a flux in the smelting of copper ore like chalcopyrite.
  22. In the manufacture of H2SO4, vanadium catalyst as compared to platinum catalyst
  23. Metallic soap is __________ salt of fatty acids.
  24. Thorium is mainly used
  25. Hydrogenation of oil does not
  26. Type of glass used in optical work is the __________ glass.
  27. Pick out the false statement pertaining to water treatment.
  28. Which of the following paper does not require a filler during manufacture?
  29. Which of the following is an organometallic compound?
  30. Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers…