• # question_answer The gas emitted by burning wood is mainly A)  Carbon monoxide B)  sulphur dioxide C)  Carbon dioxide D)  methane

[c] Carbon dioxide is the most common gas produced by burning wood. As an organic material, wood is largely carbon and when exposed to heat in the fire this carbon changes into carbon dioxide, the same gas that is produced when any type of biomass is burnt. Wood absorbs carbon dioxide through the air as it grows, changing it into carbon in its fibers. Burning the wood reverses this process, releasing about 1900g of $C{{O}_{2}}$for every 1000g of wood that is fully burnt.