Fuels and Combustion
Degree of carbonisation of coal during coke making can be roughly judged by the __________ of the coke produced.

Volatile matter
Ash content
Moisture content
Colour

ANSWER DOWNLOAD EXAMIANS APP

Fuels and Combustion
Sometimes water is sprayed during coal charging in the coke oven, which helps in

Prevention of clinker formation in the oven
Reducing the cracking of hydrocarbons in the gas and increasing the percentage of CO & H₂ in the gas (due to the endothermic reaction represented by C + H₂O = CO + H₂)
All of these
Controlling the dust nuisance while charging the coal

ANSWER DOWNLOAD EXAMIANS APP

Fuels and Combustion
Lignite is

A black banded coal which burns with a non-smoky yellowish flame
Can be used for gasification and steam generation
A high rank coal
A coking coal

ANSWER DOWNLOAD EXAMIANS APP