Question

________gas released as a result of incomplete burning of fuels.

Answer 1

Carbon monoxide as gas released:

1. Incomplete combustion of fossil fuels like wood leads to the release of Carbon Monoxide
2. This occurs due to less supply of oxygen for the burning of fuel.
3. In a complete combustion reaction, there is a sufficient supply of Oxygen and it evolves into Carbon Dioxide gas.
4. This is a poisonous gas and causes global warming.

$\mathrm{Hydrocarbon}+\mathrm{Oxygen}\to \mathrm{Carbon}\mathrm{monoxide}+\mathrm{Carbon}+\mathrm{Water}$

5. Example: When Methane reacts with Oxygen there is the formation of Carbon Monoxide, Carbon, and Water.

$\underset{\mathrm{Methane}}{4{\mathrm{CH}}_4\left(\mathrm{g}\right)}+\underset{\mathrm{Oxygen}}{5{\mathrm{O}}_2\left(\mathrm{g}\right)}\to \underset{\mathrm{Carbon}\mathrm{monoxide}}{2\mathrm{CO}\left(\mathrm{g}\right)}+\underset{\mathrm{Carbon}}{2\mathrm{C}\left(\mathrm{s}\right)}+\underset{\mathrm{Water}}{8{\mathrm{H}}_2\mathrm{O}\left(\mathrm{g}\right)}$

Hence, Carbon monoxide gas is released as a result of the incomplete burning of fuels.