Fuels and Combustion
By-products recovery process from coal carbonisation is termed as direct, indirect and semi direct process depending upon the method of recovery of

Tar
None of these
Benzol
Ammonia

ANSWER DOWNLOAD EXAMIANS APP

Fuels and Combustion
The main drawback of supplying more excess air in the combustion of fuel is the

Enhanced sensible heat loss in the flue gas
Intermittant and uncontrolled combustion of the fuel
Excessive power requirement of air blower
High exit flue gas temperature from the furnace

ANSWER DOWNLOAD EXAMIANS APP