99.5% purity oxygen is used in

A. Cutting and welding by oxy-acetylene flame

B. Hospitals for medicinal purposes

C. Gas masks and artificial breathing apparatus

D. All (A), (B), and (C)

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

You can do it
  1. Solvent extracted oil
  2. The gasification reaction represented by, C + H2O = CO + H2, is a/an __________ reaction.
  3. The difference between saponification value and acid value is
  4. The biochemical treatment applied to sewage effluents is a process of
  5. Chalcopyrite is the main ore of
  6. Fat dispersed in water is exemplified by
  7. Fermentator temperature during production of alcohol from molasses is around __________ °C.
  8. Most commonly used rubber vulcanising agent is
  9. Acrylonitrile is mainly used in the __________ industry.
  10. The main aim behind cooling the digested chip at the bottom portion of the digestor by injecting cold…
  11. Grignard reagent is chemically known as
  12. Synthesis gas is a mixture of
  13. Paper pulp produced by Kraft/sulphate process is
  14. Hydrazine (N2H4) is used mainly as a/an
  15. __________ is produced by the dehydrogenation of ethyl benzene.
  16. Rotary kiln is not involved in the production of
  17. Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst…
  18. Which of the following is not an abrasive material?
  19. Nylon-66 is manufactured from
  20. Naphthalene is removed from coke oven gas by
  21. Soap cannot be used with hard water, because
  22. __________ of quicklime produces slaked lime.
  23. Fat splitting catalyst is
  24. At very high concentration of enzymes, the rate of fermentation chemical reaction is __________ the…
  25. Which of the following is the second major component of cement?
  26. Pure rectified spirit contains about __________ percent alcohol.
  27. Setting of plaster of Paris is accompanied with
  28. Na2CO3 is called
  29. __________ is a polysaccharide.
  30. Electric bulbs are made of __________ glass.