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Heating of __________ to 120°C, produces plaster of paris.

A. Blue vitriol

B. Gypsum

C. Calcium silicate

D. Calcium sulphate

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

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  1. Naphthalene is removed from coke oven gas by
  2. Main constituent of limestone is
  3. Esterification reaction produces
  4. At very high concentration of enzymes, the rate of fermentation chemical reaction is __________ the…
  5. Which one of the following is not an elastomer?
  6. Blue colour is imparted to glass by the addition of
  7. White phosphorous is stored under water, because
  8. Triple superphosphate is manufactured by reacting
  9. The main product of high temperature carbonisation of coal is
  10. Transparent soaps (e.g. Pears) are
  11. Oxygen is produced by fractionation of air using __________ process.
  12. __________ process is used for the manufacture of sodium carbonate by ammonia soda process.
  13. Diaphragm electrolytic cell as compared to mercury electrolytic cell
  14. Blue vitriol is chemically
  15. Pick out the endothermic reaction out of the following.
  16. Poly Tetrafluoroethylene (P.T.F.E.) is known as
  17. Fermentator temperature during production of alcohol from molasses is around __________ °C.
  18. Which of the following is used as a coagulant in treating turbid water?
  19. __________ process is used for producing soda ash.
  20. In the Lurgi coal gasifier
  21. A unit operation is exemplified by the process of
  22. Glass is
  23. Maleic anhydride is produced by catalytic oxidation of
  24. Phthalic anhydride is made by the
  25. Phthalic anhydride is used
  26. Presence of H2S in raw water (to be chlorinated) results in the
  27. Ethyl alcohol cannot be produced
  28. Rosin soap is added during paper manufacture to
  29. The purpose of tanning in leather industry is to
  30. Double Contact Double Absorption (DCDA) process is the most recent process for the manufacture of