Engineering Thermodynamics
One kg of carbon monoxide requires 4/7 kg of oxygen and produces

11/3 kg of carbon dioxide gas
11/7 kg of carbon dioxide gas
7/3 kg of carbon monoxide gas
8/3 kg of carbon monoxide gas

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Engineering Thermodynamics
Producer gas is obtained by

Carbonization of bituminous coal
Passing air and a large amount of steam over waste coal at about 650°C
Passing steam over incandescent coke
Partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast

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