Fuels and Combustion
A coal with high ash content

Is not subjected to washing
Has low quantity of mineral matter
Has higher calorific value
Is harder and stronger

ANSWER DOWNLOAD EXAMIANS APP

Fuels and Combustion
A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon

Requires smaller combustion space and less secondary air
Is more difficult to ignite and produces a shorter flame
Is less liable to spontaneous combustion on storage
None of these

ANSWER DOWNLOAD EXAMIANS APP