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MCQs

Total Questions : 3103 | Page 27 of 311 pages
Question 261. Glycerine can be obtained from
  1.    Fat
  2.    Naphthalene
  3.    Cumene
  4.    Sucrose
 Discuss Question
Answer: Option A. -> Fat
Question 262. Glycerine is not used in the
  1.    Manufacture of explosive
  2.    Conditioning and humidification of tobacco
  3.    Manufacture of pharmaceuticals
  4.    None of these
 Discuss Question
Answer: Option D. -> None of these
Question 263. Graphite is a/an
  1.    Electrical insulator
  2.    Allotrope of carbon
  3.    Moderator used in nuclear reactor
  4.    Both B and C
 Discuss Question
Answer: Option D. -> Both B and C
Question 264. Gun powder uses
  1.    Sulphur
  2.    Charcoal
  3.    Potassium nitrate
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 265. Gypsum is chemically
  1.    Calcium chloride
  2.    Potassium sulphate
  3.    Sodium sulphate
  4.    Calcium sulphate
 Discuss Question
Answer: Option D. -> Calcium sulphate
Question 266. Lime and soda ash are added to water to remove
  1.    Bicarbonates & sulphates of calcium and magnesium
  2.    Undersirable taste and odour
  3.    Bacteria
  4.    Its corrosiveness
 Discuss Question
Answer: Option A. -> Bicarbonates & sulphates of calcium and magnesium
Question 267. Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H₂O = Fe₃O₄ + 4H₂, is not practised, as it is
  1.    A slow reaction
  2.    A discontinuous reaction (requiring regeneration of iron by water gas intermittently)
  3.    Still in development stage (by employing fluidised bed technique)
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 268. Haemoglobin is a/an
  1.    Amino acid
  2.    Biological catalyst
  3.    Protein
  4.    Enezyme
 Discuss Question
Answer: Option C. -> Protein
Question 269. Chalcopyrite is the main ore of
  1.    Copper
  2.    Lead
  3.    Tin
  4.    Iron
 Discuss Question
Answer: Option A. -> Copper
Question 270. Phthalic anhydride is made by the
  1.    Oxidation of naphthalene
  2.    Oxidation of benzene
  3.    Dehydrogenation of ethyl benzene
  4.    None of these
 Discuss Question
Answer: Option A. -> Oxidation of naphthalene

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