Question

What happens when wood is burnt in a limited supply of oxygen? Name the residue left behind after the reaction and state two advantages of using this residue as a fuel over wood.

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Answer 1

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▶️When wood is burnt in a limited supply of oxygen, volatile materials present in it get removed and cooled to get wood tar and wood gas.

▶️The black residue left behind after the reaction is known as charcoal. Advantages of using charcoal as a fuel over wood are:

▶️Burning of charcoal does not produce smoke. On the other hand, wood produces a lot of smoke on burning.

▶️For a given quantity, charcoal produces ,more heat than wood.

Answer 2

Answer:

When wood is burnt in sufficient amount of oxygen it produces charcoal. the advantage of using charcoal is that it burns smokelessly thus preventing pollution