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Magnesium and calcium __________ cause temporary hardness of water.

A. Carbonates

B. Bicarbonates

C. Phosphates

D. Sulphates

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

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  1. Bakelite is chemically known as
  2. Pick out the wrong statement.
  3. Cooking liquor in case of sulphite process is
  4. The main product of high temperature carbonisation of coal is
  5. Which of the following is an unsaturated fatty acid?
  6. Solvay process is not used for the manufacture of potassium carbonate, because of the reason that potassium…
  7. Reaction of an alcohol with organic acid is called the __________ reaction.
  8. A unit operation is exemplified by the process of
  9. Hydrogenation of edible vegetable oils
  10. Which of the following is a detergent?
  11. Carboxymethyl cellulose (CMC) is added in detergents to act as a/an
  12. Lindane is
  13. Epoxy resin
  14. Oil is a/an
  15. Naphthols are derivates of
  16. Which of the following is not produced commercially from sea water?
  17. Concentration of NaOH solution produced by diaphragm electrolytic cell is about __________ percent.
  18. A cane sugar factory having sugar production rate of 10 tons/day will produce about __________ tons/day…
  19. Poly Tetrafluoroethylene (P.T.F.E.) is known as
  20. The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is
  21. Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively
  22. Which of the following is not required in the manufacture of soda ash by Solvay process?
  23. Which of the following is a bleaching agent added in the detergents to facilitate removal of stains…
  24. The most economical pulp for the production of newsprint would be the __________ pulp.
  25. Mercury electrolytic cells are preferred over diaphragm electrolytic cell (for production of caustic…
  26. Fatty material used in soap making is
  27. Alcohol content in freshly prepared natural and fortified wine may be respectively around __________…
  28. In the Lurgi coal gasifier
  29. Which of the following coals has the highest calorific value?
  30. __________ is a thermosetting plastic.