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Chemical formula of 'salt cake' is

A. Na2SO4

B. CaSO4

C. MgSO4

D. BaSO4

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  1. Percentage of glycerine present in the spent lye obtained during soap manufacture is about
  2. During the manufacture of sulphuric acid, the temperature of molten sulphur is not increased beyond…
  3. Oils and fats are converted to soap in a process called
  4. Production of one ton of cement requires about __________ tons of limestone.
  5. Purity of oxygen used for blowing in steel making L.D. converter is 99.5%. The boiling point of oxygen…
  6. Fluorescent dyes are added in detergents to
  7. Neoprene is chemically known as
  8. Wood charcoal is used for decolouration of sugar, because it __________ the coloured materials.
  9. The difference between saponification value and acid value is
  10. Fourdrinier machine is used in the manufacture of
  11. __________ are added in lacquers to remove film brittleness and to improve adhereness.
  12. Hydrolysis of sugar is called
  13. Bleaching of paper pulp is done with
  14. Dacron is a/an
  15. Iron ore hematite is concentrated using
  16. __________ acid is an unsaturated fatty acid.
  17. __________ is a thermosetting plastic.
  18. Exothermic neutralisation reaction between caustic soda and dodecylbenzene sulfonic acid produces sodium…
  19. Basic oxide is absent in __________ glass.
  20. Which of the following is not an antibiotic?
  21. Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively
  22. Kaolin is a/an
  23. Function of sodium thiosulphate (hypo) in development of photographic film/plate is to
  24. Multistage catalytic converter is not used in the
  25. Dehydrogenation of ethyl benzene produces
  26. Alcohol percentage in molasses may be around
  27. Ethylene oxide is produced by oxidation of ethylene in presence of AgO catalyst at
  28. Lubricating greases are a mixture of
  29. Fat dispersed in water is exemplified by
  30. Lithophane is