Mannheim furnace is used in the manufacture of

A. Hydrochloric acid

B. H2SO4 by Chamber process

C. Calcium carbide

D. Corundum

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

You can do it
  1. Salt is added in the kettle during soap manufacture to separate
  2. Which is the main reducing agent during production of iron from iron ore in a blast furnace?
  3. Yellow glycerine is made into white, using
  4. Chemical formula of 'salt cake' is
  5. Commercial production of Vanaspati is done by __________ of edible vegetable oils.
  6. Carboxymethyl cellulose (CMC) is added in detergents to
  7. Washing soda is chemically represented by
  8. Bakelite is chemically known as
  9. Potassium is kept & transported under
  10. Rancidity of the fatty oil can be reduced by its
  11. Liquefaction of gases cannot be done by
  12. Which of the following is a constituent of vinegar?
  13. Solvay process is not used for the manufacture of potassium carbonate, because of the reason that potassium…
  14. Pig iron is produced by blast furnaces in India using mostly the iron ore named
  15. Hydrogenation of vegetable oils is a/an __________ reaction.
  16. Chalcopyrite is the main ore of
  17. The function of gypsum addition during cement making is to
  18. Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury…
  19. A good quality coal should have
  20. Carbon content of pitch (residue of coal tar distillation) is around __________ percent.
  21. Which of the following is not an abrasive material?
  22. Favourable conditions for the liquefaction of gases in general are
  23. Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H2O = Fe3O4…
  24. __________ acid is the main constituent of cotton seed oil.
  25. Electro deposition of metals i.e. electroplating is never done on
  26. Which of the following coals has the highest calorific value?
  27. Penicillin is separated from fermented broth by
  28. Which of the following is not responsible for causing permanent hardness of water?
  29. Which of the following is a constituent of coffee?
  30. Which of the following is an explosive?