The main combustible part of wood is cellulose, a compound of carbon, hydrogen, and oxygen, which, when it burns, breaks down to carbon dioxide, water, and heat.
The substances which catches fires easily in air and produce heat and light upon burning is known as Combustible Substances.
Example: Wood, Oil, Kerosene, Hydrogen gas, Cloth etc.
When these compounds carbon, hydrogen and oxygen burns completely the carbon oxidizes to carbon dioxide , water and heat.
Thus from the above conclusion we can say that The main combustible part of wood is cellulose, a compound of carbon, hydrogen, and oxygen, which, when it burns, breaks down to carbon dioxide, water, and heat.
Learn more about the Combustible Substance here: https://brainly.com/question/12875341
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