Multiple choice

Wood charcoal is obtained by burning wood

  1. in contact with air

  2. out of contact with air

  3. in contact with chlorine

  4. out of with carbon dioxide
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Wood charcoal is produced by heating wood in a limited supply or absence of air (pyrolysis), which prevents the wood from burning completely into ash.

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