Multiple choice

Wood charcoal is commonly prepared by the process of burning wood

  1. in contact with air

  2. in contact with pure oxygen

  3. without contact with air

  4. in contact with nitrogen and inert gases
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Wood charcoal is produced by heating wood in the absence of air, a process called destructive distillation or carbonization. If air or oxygen were present, the wood would simply burn to ash.

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