Fuels and Combustion
In high temperature carbonisation (as compared to low temperature carbonisation) of coal

Coke oven gas yield is more
All of these
Calorific value of coke oven gas is less
Tar yield is less but free carbon in tar is more

ANSWER DOWNLOAD EXAMIANS APP

Fuels and Combustion
Prime coking coal is always blended with medium or non- coking coal before ear-bonisation

Neither A nor B
Because, it alone produces unreactive coke
Both A & B
To check against its excessive swelling during heating, which may exert high pressure and damage coke oven walls

ANSWER DOWNLOAD EXAMIANS APP