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WBCS Main Examination 2023 — Paper IV: General Studies II · Question 104 of 200

Q104
General ScienceChemistry
The best quality coal is
  1. a.Anthracite
  2. b.Peat
  3. c.Bituminous
  4. d.Lignite

Answer: (A) Anthracite

Anthracite has the highest carbon content (over 85–90%) and calorific value, and burns with little smoke, so it is the best quality coal. Bituminous coal comes next, then lignite, and peat is the lowest grade.

Q103 Whole paperQ105