High sulphur content in a fuel ______________ of the flue gases?

A. More
B. Less
C. Equal
D. More or less; (depends on the state of fuel.)

A. The ratio of its percentage of fixed carbon to that of volatile matter
B. Helpful in estimation of its rank
C. Both A. and B.
D. Neither A. nor B.

A. Calorific value increases sometimes
B. Bulk density always decreases
C. Clinkering tendency during combustion increases
D. None of these

A. Higher calorific value
B. Lower hydrogen content
C. Both A. and B.
D. Neither A. nor B.