Calorific value for coal (in kcal/kg) is
A. 1000-2500
B. 2500-4000
C. 4000 - 7000
D. 5000 – 8000
Answer:C
Calorific value for coal (in kcal/kg) is
A. 1000-2500 B. 2500-4000 C. 4000 - 7000 D. 5000 – 8000