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Coal and Petroleum — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceCoal and Petroleum1 Mark
MCQ
By which of the given processes is coal formed?
  • ✓
    Carbonization
  • B
    Distillation
  • C
    Vaporization
  • D
    Evaporation
✓

Answer

Correct option: A.
Carbonization

When dead plants and animals get buried deep under the earth, they get decomposed by the action of anaerobic bacteria. Hydrogen and oxygen escape as gases leaving behind carbon. As years pass, layers of carbon atoms are added one above the other forming a stony substance called coal, this process is called carbonization.

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