Which of the following fuels has the highest calorific value?
A
lignite
B
wood
C
bituminous
D
anthracite
Correct Answer: anthracite
Anthracite has the calorific value 8650-8700k.cal/kg as the highest one. The calorific values of the others are as follows: Wood-4000-4500k.cal/kg Bituminous-8000-8500k.cal/kg Lignite-6500-7100k.cal/kg.