Multiple choice

Which of the following plays an important part in the formation of coal?

  1. Starch of plants

  2. Chlorophyll of plants

  3. Gum and resins of plants

  4. Cellulose of plants

  5. Sucrose of the plants
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The cellulose of the plants is acted upon by bacteria, which removes the hydrogen and oxygen from the cellulose, leaving a residue rich in carbon which is known as coal.

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