Multiple choice

What happens to wood when it is burnt completely in limited supply of oxygen?

  1. Charcoal is left behind; water and volatile material get removed.

  2. Charcoal is left behind; water and non-volatile material get removed.

  3. Wood is left behind; water and volatile material get removed.

  4. Charcoal, water and non-volatile material are left behind.

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A Correct answer
Explanation

Charcoal is left behind; water and volatile material get removed.