Sea weeds are an important source of

A. Fluorine

B. Chlorine

C. Bromine

D. Iodine

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

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  1. The major constituent of black liquor generated during paper manufacture is sodium
  2. 99.5% purity oxygen is used in
  3. Chemical name of Grignard reagent is
  4. Massecuite is
  5. Permanent hardness of water can be removed by
  6. Fire clay is __________ refractory material.
  7. Electric bulbs are made of __________ glass.
  8. A good quality coal should have
  9. The temperature in the calcium carbide furnace is __________ °C.
  10. Saponification number of an oil or fat
  11. Gun powder uses
  12. Paper pulp produced by Kraft/sulphate process is
  13. Nickel is not used as a catalyst in the
  14. Zeolite used in water softening process (cation exchange) is regenerated by washing with
  15. The function of gypsum addition during cement making is to
  16. Litharge is
  17. Raw materials required for the manufacture of __________ is acetylene and hydrochloric acid.
  18. Gun powder, which is an explosive comprises of charcoal, sulphur and
  19. Coke used for the production of calcium carbide should have
  20. Solvay process is used for the manufacture of
  21. The most economical pulp for the production of newsprint would be the __________ pulp.
  22. Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H2O = Fe3O4…
  23. CaO is called
  24. Cellulose percentage in bamboo fibre is about
  25. 90% of the caprolactam is converted to nylon-6 on its condensation polymerisation in the reactor maintained…
  26. Pick out the wrong statement.
  27. Lime and soda ash are added to water to remove
  28. Pure rectified spirit contains about __________ percent alcohol.
  29. Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.
  30. Production of one ton of cement requires about __________ tons of limestone.