Dichloro diphenyl __________ is the full form of DDT (an insecticide).

A. Tetrachloroethane

B. Trichloroethane

C. Tetrachloromethane

D. Trichloromethane

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  1. Function of thinner in a paint is to
  2. Kopper-Totzek coal gasifier
  3. Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt…
  4. 99.5% purity oxygen is used in
  5. Which is the main reducing agent during production of iron from iron ore in a blast furnace?
  6. Dry ice (solidified CO2) is used for the
  7. Neoprene is chemically known as
  8. Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces
  9. Which of the following is not an abrasive material?
  10. Multistage catalytic converter is not used in the
  11. Grignard reagent is chemically known as
  12. Permanent hardness of water can be removed by
  13. Which of the following contains least amount of N2?
  14. Salt cake is chemically represented by
  15. The end bleaching agent used to move last traces of colour bodies from the pulp is
  16. The compressive strength of cement should not be less than about 110Kg/cm2 after three days & not less…
  17. Which of the following is not a raw material used for the manufacture of ordinary glass?
  18. Starting material for the production of butadiene in India is
  19. Separation of fresh water from sea water can be done by the __________ operation.
  20. Caprolactam (a raw material for nylon-6 manufacture) is produced from
  21. Production of one ton of dry paper pulp requires about __________ tons of bamboo or wood.
  22. Yellow phosphorus is transported under
  23. __________ paper is used in the manufacture of newsprint paper.
  24. Penicillin is separated from fermented broth by
  25. Oil is a/an
  26. Process conditions in fermentator used for production of penicillin is
  27. Naphthalene is removed from coke oven gas by
  28. Lithophane is
  29. Na2CO3.10H2O is called
  30. Hydrazine is used in water treatment for the removal of