Exam preparation MCQs with answers

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Lignite is ___________________?
  • (A)  A high rank coal
  • (B)  A coking coal
  • (C)  Can be used for gasification and steam generation
  • (D)  A black banded coal which burns with a non-smoky yellowish flame
Cannel coal__________________?
  • (A)  Is non-coking
  • (B)  Has a high volatile matter content and burns with a luminous smoky flame
  • (C)  Is a non-banded coal which can be ignited easily with a match stick or candle flame, hence is so named
  • (D)  All
In Lurgi coal gasifier___________________?
  • (A)  Coking coals cannot be used
  • (B)  Low carbon conversion efficiency is achieved
  • (C)  Entrainment of solids is higher
  • (D)  Larger quantity of coal can be processed