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WAEC Geography 2001 Question 45

Question 45

Mining and Energy

Which of the following is the cheapest source of power for a large scale industry?

  1. A.Coal
  2. B.Gas
  3. C.Water
  4. D.Petroleum
Show the answer and explanation

Answer: C (Water)

Explanation

Water (hydro-electric power) is the cheapest source of power for large industries: once the dam is built, the running water is free and running costs are low. Coal, gas and petroleum have to be mined, bought and transported.