Phthalic anhydride is used

A. In making PVC

B. As plasticisers

C. In insecticides manufacture

D. For making nylon-6

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

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  2. Concentration of hydrogen peroxide is done by
  3. 99.5% purity oxygen is used in
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  6. Highly porous refractory bricks are
  7. In sulphate pulp manufacture, the pressure and temperature in the digestor is
  8. Nylon-6 is manufactured from
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  10. Heating of __________ to 120°C, produces plaster of paris.
  11. Fire clay is __________ refractory material.
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  13. __________ is an ore of lead.
  14. The catalyst used in shift converter is
  15. Vanillin is a type of
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  18. Nylon-66 is so named because the
  19. Carbon tetrachloride (CCl4) is the starting raw material for the manufacture of
  20. Lubricating greases are a mixture of
  21. Common salt is generally not produced commonly by __________ method from brine.
  22. Which of the following is the most adverse factor challenging the choice of mercury electrolytic cell…
  23. Carbon content of pitch (residue of coal tar distillation) is around __________ percent.
  24. Chemical formula of oleum is
  25. The catalyst used in the production of elemental sulphur from H2S (by oxidation-reduction) is
  26. Conversion of CO to CO2 by steam in presence of a catalyst is called
  27. Brackish water which contains mostly dissolved salt, can be purified by the __________ process.
  28. Pick out the wrong statement.
  29. Bisphenol A is produced by the condensation of acetone with
  30. Reverse osmosis is normally used for the