Fuels and Combustion
Which of the following is not a by-product recovered in a high temperature coal carbonisation plant?

Ethylene
Pitch-cresosote mixture (PCM)
Napthalene
Benzol

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Fuels and Combustion
Low temperature carbonisation

Is meant for the production of 'metallurgical coke'
Is mainly for producing the smokeless domestic coke
Produces less quantity of tar than high temperature carbonisation
Produces higher quantity of gas than high temperature carbonisation

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