Fuels and Combustion
In low temperature carbonisation of coal, the

Volatile matter in coke is zero
Temperature maintained is 700°C
Yield of tar is about 3% of dry coal
Yield of coke oven gas is 290 Nm³ /ton dry coal

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Fuels and Combustion
Orsat apparatus is meant for

Gravimetric analysis of flue gas
None of these
Finding out combustion efficiency
Direct determination of nitrogen in flue gas by absorbing it in ammoniacal cuprous chloride

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