Coal Firing Systems MCQ

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• Proximate analysis of coal determines its __________ content.
  ক

  moisture, ash, sulphur & volatile matter

  খ

  moisture, volatile matter, ash & fixed carbon

  গ

  moisture, sulphur, nitrogen & fixed carbon

  ঘ

  none of the mentioned
• Which of the following petrographic constituents of coal is non-coking?
  ক

  Durain

  খ

  Vitrain

  গ

  Clarain

  ঘ

  Fussain
• Abrasion index of blast furnace coke should be around __________ percent.
  ক

  20

  খ

  35

  গ

  80

  ঘ

  55
• Yield of pitch from distillation of high temperature tar is around __________ percent.
  ক

  10

  খ

  25

  গ

  65

  ঘ

  100