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MCQs

Total Questions : 3103 | Page 35 of 311 pages
Question 341. Production of alcohol by fermentation of molasses is an __________ process.
  1.    Anaerobic
  2.    Aerobic
  3.    Endothermic
  4.    Both B and C
 Discuss Question
Answer: Option B. -> Aerobic
Question 342. Nickel is not used as a catalyst in the __________ reaction.
  1.    Shift conversion
  2.    Oil hydrogenation
  3.    Steaming reforming of naphtha
  4.    Ammonia cracking/dissociation
 Discuss Question
Answer: Option A. -> Shift conversion
Question 343. Main constituents of natural rubber is
  1.    Polystyrene
  2.    Polyisoprene
  3.    Polybutadiene
  4.    Polychloroprene
 Discuss Question
Answer: Option B. -> Polyisoprene
Question 344. The type of high refractive index glass used in optical instruments is __________ glass.
  1.    Pyrex
  2.    Flint
  3.    Crookes
  4.    None of these
 Discuss Question
Answer: Option B. -> Flint
Question 345. Sucrose is a
  1.    Monosacchride
  2.    Disacchride
  3.    Polysacchride
  4.    None of these
 Discuss Question
Answer: Option B. -> Disacchride
Question 346. Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like
  1.    High cost
  2.    Fragile nature
  3.    Easy poisoning tendency
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 347. Synthesis gas is a mixture of
  1.    CO and H₂
  2.    N₂ and H₂
  3.    H₂, CH₄ and CO
  4.    CO₂ and H₂
 Discuss Question
Answer: Option A. -> CO and H₂
Question 348. Systemic insecticides
  1.    Are absorbed throughout the plant
  2.    Kill insects following external bodily contact
  3.    Are stomach poisons
  4.    Emit poisonous vapour
 Discuss Question
Answer: Option A. -> Are absorbed throughout the plant
Question 349. __________ is not a constituent of gun powder.
  1.    Carbon
  2.    Charcoal
  3.    Sulphur
  4.    Potassium nitrate
 Discuss Question
Answer: Option A. -> Carbon
Question 350. Air used in aerobic fermentation must be sterilized, otherwise the
  1.    Recovery of product will be difficult
  2.    Contamination of pure culture would result
  3.    Uniformity of product cannot be achieved
  4.    None of these
 Discuss Question
Answer: Option B. -> Contamination of pure culture would result

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