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Pick out the wrong statement.

A. Conversion of SO2 to SO3 in Monsanto-4 pass converter is about 98%

B. The chemical formula of oleum is H2S2O7, which is formed by saturating sulphuric acid with sulphur trioxide

C. Vitriol oil is nothing but technical sulphuric acid

D. Decomposition of sulphuric acid on heating does not start before its boiling

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

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  2. Boiling of water containing temporary hardness produces
  3. Styrene is produced from ethyl benzene by the process of
  4. Most commonly used rubber vulcanising agent is
  5. Analgesic drugs are
  6. Pick out the exothermic reaction out of the following:
  7. Oxidation of SO2 to SO3 is favoured by
  8. A mixture of chlorine & sodium bromide acts as a/an
  9. Nitrogen is an essential component of
  10. Lithophane is
  11. Which of the following is a constituent of coffee?
  12. Carbon disulphide is mainly used in the production of
  13. Chemical name of Grignard reagent is
  14. The most stable allotropic form of phosphorous is the __________ phosphorous.
  15. __________ glass is used for the manufacture of optical glass.
  16. Solvay process as compared to dual process(i.e. modified Solvay process).
  17. High purity nitrogen is used in
  18. Bleaching of paper pulp is done with
  19. The most commonly used substance to speed up the sedimentation of sewage is
  20. High magnesia lime is added to hot sugar cane juice (during the manufacture of sugar) to
  21. In the manufacture of viscose rayon, the raw material used industrially is
  22. Pick out the wrong statement.
  23. More than 100 percent of __________ is present in oleum.
  24. Alcohol content in freshly prepared natural and fortified wine may be respectively around __________…
  25. Paper pulp produced by Kraft/sulphate process is
  26. Varnish does not contain
  27. Low purity oxygen is used for
  28. Bleaching action of bleaching powder is due to its __________ properties.
  29. Coagulant is used __________ filtration.
  30. Heating of __________ to 120°C, produces plaster of paris.