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MCQs

Total Questions : 3103 | Page 2 of 311 pages
Question 11. Oxidation of ortho-xylene in presence of __________ catalyst is done to produce phthalic anhydride on commercial scale.
  1.    Nickel
  2.    Vanadium
  3.    Alumina
  4.    Iron
 Discuss Question
Answer: Option B. -> Vanadium
Question 12. Which of the following is used as a coagulant in treating turbid water?
  1.    Chlorine
  2.    Ferric sulphate
  3.    Calcium sulphate
  4.    Activated carbon
 Discuss Question
Answer: Option B. -> Ferric sulphate
Question 13. Antibiotic
  1.    Inhibits/destroys the growth of microorganisms
  2.    Is used as a pain reliever
  3.    Is an antimalarial
  4.    Is an anaesthetic
 Discuss Question
Answer: Option A. -> Inhibits/destroys the growth of microorganisms
Question 14. Digestion of wood-base materials (for manufacture of pulp) is done to
  1.    Remove lignin
  2.    Produce long fibres
  3.    Prevent deterioration on storage
  4.    None of these
 Discuss Question
Answer: Option A. -> Remove lignin
Question 15. __________ paper is used in the manufacture of newsprint paper.
  1.    Groundwood
  2.    Board
  3.    Tissue
  4.    Wrapping
 Discuss Question
Answer: Option A. -> Groundwood
Question 16. Raw materials for 'Solvay Process' for manufacture of the soda ash are
  1.    Salt, limestone and coke or gas
  2.    Ammonia, salt and limestone
  3.    Ammonia limestone and coke
  4.    None of these
 Discuss Question
Answer: Option A. -> Salt, limestone and coke or gas
Question 17. Penicillin is separated from fermented broth by
  1.    Extraction with amyl or butyl acetate
  2.    Ternery azeotropic distillation
  3.    Evaporation in calendria
  4.    Extractive distillation
 Discuss Question
Answer: Option A. -> Extraction with amyl or butyl acetate
Question 18. Nitroglycerene absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as a controlled explosive called dynamite. The raw material used for its manufacture are glycerene, nitric acid and
  1.    Sulphuric acid
  2.    Phosphoric acid
  3.    Hydrochloric acid
  4.    Hydroflouric acid
 Discuss Question
Answer: Option A. -> Sulphuric acid
Question 19. Calcareous & argillaceous materials are used in the manufacture of
  1.    Lead
  2.    Cement
  3.    Carbon disulphide
  4.    None of these
 Discuss Question
Answer: Option B. -> Cement
Question 20. Chemical name of aspirin (an analgesic drug) is
  1.    Acetylsalicylic acid
  2.    Nictonic acid
  3.    Calcium acetate
  4.    Methyl salicylate
 Discuss Question
Answer: Option A. -> Acetylsalicylic acid

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