MCQ practice · SSC Physics Board questions · Chapter 4: Work, Power and Energy
Which energies are renewable energies?
Think it through first, then pick an option.
- a coal, geothermal and sea waves
- b natural gas, tides and air flow
- c water flow, sea heat and sunlight
- d solar heat, hydrogen fuel and uranium
Answer and explanation
Correct answer: c water flow, sea heat and sunlight
Water flow and sunlight are renewable sources. Each of the other three lists contains a non-renewable source (coal, natural gas or uranium), so none of them is wholly renewable.
Why the other options are wrong
- a coal, geothermal and sea waves: This is not the answer: Water flow and sunlight are renewable sources. Each of the other three lists contains a non-renewable source (coal, natural gas or uranium), so none of them is wholly renewable.
- b natural gas, tides and air flow: This is not the answer: Water flow and sunlight are renewable sources. Each of the other three lists contains a non-renewable source (coal, natural gas or uranium), so none of them is wholly renewable.
- d solar heat, hydrogen fuel and uranium: This is not the answer: Water flow and sunlight are renewable sources. Each of the other three lists contains a non-renewable source (coal, natural gas or uranium), so none of them is wholly renewable.
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