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MCQs

Total Questions : 1424 | Page 5 of 143 pages
Question 41. Pick up the correct statement from the following:
  1.    In basic Bessemer process, the steel heats the converter
  2.    In open-hearth process, the furnace heats the steel
  3.    In Siemens process, the impurities of pig iron are oxidized by the oxygen of the ore
  4.    All the above
 Discuss Question
Answer: Option D. -> All the above
Question 42. Pick up the correct statement from the following:
  1.    In stone arches, the stones are placed with their natural beds radial
  2.    In cornices, the stones are placed with their natural beds as vertical
  3.    In stone walls, the stones are placed with their natural beds as horizontal
  4.    All the above
 Discuss Question
Answer: Option D. -> All the above
Question 43. Pick up the correct characteristic of Pyroxene from the following:
  1.    It forms octagonal crystals
  2.    It converts to chlorine by hydration
  3.    All the above
 Discuss Question
Answer: Option C. -> All the above
Question 44. Pick up the correct statement regarding low heat cement from the following:
  1.    It possesses less compressive strength
  2.    Its initial setting time is about one hour
  3.    Its final setting time is about 10 hours
  4.    All the above
 Discuss Question
Answer: Option D. -> All the above
Question 45. Pick up the correct statement from the following:
  1.    Melamine is obtained from calcium carbide
  2.    Formaldehyde is prepared synthetically from methane
  3.    The melamine when reacted with formaldehyde forms the melamine-formaldehyde resin
  4.    All the above
 Discuss Question
Answer: Option D. -> All the above
Question 46. Pick up the incorrect statement from the following:
  1.    Plastics are chemical resistant
  2.    Plastics are durable
  3.    Plastics are ductile
  4.    Plastics are excellent electric insulators
 Discuss Question
Answer: Option C. -> Plastics are ductile
Question 47. Pick up the correct statement from the following:
  1.    Plastics have generally low melting point
  2.    The coefficient of thermal expansion of plastics is about three times than that of steel
  3.    The acoustical boards prepared by impregnating fibre-glass with phenolic resins has absorption coefficient of about 0.67
  4.    All the above
 Discuss Question
Answer: Option D. -> All the above
Question 48. Pick up the polymineralic rock from the following:
  1.    Quartz sand
  2.    Pure gypsum
  3.    Magnesite
  4.    Granite
 Discuss Question
Answer: Option D. -> Granite
Question 49. Pick up the correct statement from the following:
  1.    Quick lime is obtained by burning pure lime stone
  2.    Hydraulic lime is obtained by burning lime stone containing clay 5% to 30%
  3.    Poor lime is obtained by burning lime stone containing impurities more than 5%
  4.    All the above
 Discuss Question
Answer: Option D. -> All the above
Question 50. Pick up the correct statement from the following:
  1.    Roasting is not necessary if iron ore is an oxide
  2.    Impurities float on the molten iron as slag
  3.    The slag contains lime about 45%
  4.    All the above
 Discuss Question
Answer: Option D. -> All the above

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