Multiple choice

A primary fuel is that which is used in the same form as it occurs in nature. Which of the following is not a primary fuel?

  1. Natural gas

  2. Coal

  3. Wood

  4. Kerosene
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Primary fuels are found in nature, such as coal, wood, or natural gas. Kerosene is a refined product derived from petroleum, making it a secondary fuel.

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