H2S is scrubbed from refinery gases by absorption using

A. Dilute H2SO4

B. Ethanol amine

C. Chilled water

D. Tri-butyl phosphate

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. Ore concentration by froth floatation utilises the __________ of ore particles.
  2. Main constituent of limestone is
  3. __________ are used as corrosion inhibitor for iron & steel in aqueous solutions.
  4. Wood charcoal is used for decolouration of sugar, because it __________ the coloured materials.
  5. Calcination of gypsum produces
  6. Pick out the wrong statement.
  7. Which one of the following is not an elastomer?
  8. Polymerisation product of C2F4 (carbon tetrafluoride) is called P.T.F.E (poly chloro tetra fluoro ethylene).…
  9. Pure rectified spirit contains about __________ percent alcohol.
  10. Chrome tanning and vegetable tanning are done for
  11. Sea water contains about __________ ppm of bromine.
  12. Which of the following is not a food additive?
  13. Baking soda is chemically represented by
  14. Platinum is a versatile catalyst for many processes in chemical industries. It is highly prone to be…
  15. Dacron is a
  16. Manufacture of phthalic anhydride uses __________ as a catalyst.
  17. Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo.…
  18. __________ is used as a flux in the extraction of iron from iron ore (haematite) in blast furnace.
  19. All enzymes are made of
  20. Pick out the wrong statement. Iodine value of an oil or fat is
  21. __________ is a polysaccharide.
  22. __________ of quicklime produces slaked lime.
  23. Catalyst used in the oxidation of benzene to produce Maleic anhydride is
  24. The main aim behind cooling the digested chip at the bottom portion of the digestor by injecting cold…
  25. Dacron (or Terylene) fibres as compared to nylon fibres have
  26. Dry ice (solidified CO2) is used for the
  27. Starting raw material for the manufacture of alum is
  28. Which of the following is an ore of iron?
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  30. Vulcanisation of rubber