Multiple choice Which of the following substances has the highest calorific value? Peat Anthracite Lignite Bituminous coal Reveal answer Fill a bubble to check yourself B Correct answer Explanation Gross Calorific Value (GCV (kJ/kg)) Anthracite: 32500 - 34000 Lignite: 16300 Bituminous coal: 17000 - 23250 Peat: 13800 - 20500