Which is the most efficient absorbent for SO3 out of the following?

A. 20% oleum

B. 65% oleum

C. 78% H2SO4

D. 98% H2SO4

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

You can do it
  1. __________ is an ore concentrating metallurgical process involving a chemical change.
  2. Phenol formaldehyde is produced by condensation polymerisation. It is also known as
  3. Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is __________ °C.
  4. Fluorescent dyes are added in detergents to
  5. Hydrophilic group of a soap or detergent solution is
  6. Sulphuric acid completely saturated with sulphur trioxide is called
  7. Detergent is produced by the sulphonation of dodecyl benzene, which is an __________ reaction.
  8. Glycerine is not used in the
  9. Catalyst used in the hydrogenation of oil is
  10. Cumene (isopropyl benzene) is made by
  11. Blue vitriol is chemically
  12. __________ is obtained as a by-product in the manufacture of sodium hydroxide using brine.
  13. Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene?
  14. Carboxymethyl cellulose (CMC) is added in detergents to act as a/an
  15. __________ is an ore of lead.
  16. Ca(OH)2 is called
  17. Solvay process as compared to dual process(i.e. modified Solvay process).
  18. Massecuite is
  19. Vanillin is a type of
  20. Refractory bricks burnt at very high temperature have got
  21. Trinitro-toluene (TNT) is
  22. The basic difference between vegetable oils and fats is in their
  23. Viscose rayon
  24. Bleaching action of bleaching powder is due to its __________ properties.
  25. Kaolin is a/an
  26. Which form of sulphur is the most stable at room temperature?
  27. Industrial production of chloroform requires acetone and
  28. Pick out the wrong statement.
  29. The process involved in converting rubber into a thin sheet or coating it on fabric is called
  30. Oxygen is produced by fractionation of air using __________ process.