Multiple choice

Smoke in a closed room makes the walls black. This is because smoke is a

  1. gas - in - solid mixture

  2. solid - in - solid mixture

  3. solid - in - liquid mixture

  4. gas - in - gas mixture

  5. solid - in - gas mixture
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Smoke contains carbon particles which are solid, so smoke is a solid - in - gas mixture.

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