Multiple choice

Which of the following is a conventional source of energy?

  1. Geothermal energy

  2. Biogas

  3. Solar energy

  4. Hydroelectricity
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D Correct answer
Explanation

In energy classification, conventional sources refer to those used traditionally for a long time, like coal, petroleum, natural gas, and hydroelectricity. Non-conventional or renewable sources include solar, wind, geothermal, tidal, and biogas. Among the options, only hydroelectricity is classified as conventional, while geothermal, biogas, and solar are non-conventional sources.

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