Fuels and Combustion
Lurgi gasifier (high pressure gasifier) as compared to Kopper Totzek gasifier (atmospheric pressure gasifier) produces

Higher amount of methane
Both A & B
Lower amount of hydrogen
Higher amount of both methane and hydrogen

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

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

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