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Bromine content in sea water may be around __________ ppm.

A. 70

B. 640

C. 1875

D. 2500

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  1. Lubricating greases are a mixture of
  2. Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces
  3. Ca(OH)2 is called
  4. Frasch process is for
  5. The most commonly used substance to speed up the sedimentation of sewage is
  6. __________ is used as a flux in the extraction of iron from iron ore (haematite) in blast furnace.
  7. Refractory bricks having high thermal conductivity is desirable, when it is to be used in the
  8. Varnish does not contain
  9. Ethylene oxide is produced by oxidation of ethylene in presence of AgO catalyst at
  10. Nylon-6 is a
  11. Good quality of edible salt is obtained from brine by the process of
  12. Pasteurisation of milk means
  13. __________ glass is used for the manufacture of optical glass.
  14. Viscose rayon is
  15. Nylon-6 as compared to Nylon-66 is having higher
  16. __________ is a polysaccharide.
  17. Naphthols are derivates of
  18. Calcination of gypsum produces
  19. Starting material for the production of styrene butadiene rubber (SBR) is
  20. Neon gas is
  21. Anion exchanger is regenerated usually with
  22. Sulphuric acid is mainly used in the __________ industry.
  23. Polyvinyl chloride (PVC) is
  24. Pick out the wrong statement.
  25. Oxygen is separated by distillation from air after its liquefaction. The boiling point of oxygen is…
  26. Out of the following processes of paper pulp manufacture, the maximum corrosion problem in digestion…
  27. Pick out the wrong statement.
  28. __________ acid is an unsaturated fatty acid.
  29. Raw materials used for producing __________ cement does not contain iron oxide.
  30. Nickel is not used as a catalyst in the