Fuels and Combustion
Method of maintaining fires in furnace during standby periods without undue consumption of fuel is called

Back draughting
None of these
Banking
Under pressurising

ANSWER DOWNLOAD EXAMIANS APP

Fuels and Combustion
Fixed carbon in coal is defined as

The one which is present in the residue after combustion
Hundred minus the percentage of volatile matter, ash and moisture
That present in volatile matters
The total quantity of carbon present in the coal

ANSWER DOWNLOAD EXAMIANS APP