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प्रश्न
Which types of resources of energy are coal, petroleum and natural gas?
विकल्प
conventional sources
non-renewable sources
non-conventional sources
Both (a) and (b)
MCQ
उत्तर
Both (a) and (b)
Explanation:
Coal, petroleum, and natural gas are considered conventional energy sources because they have been traditionally used for energy production. They are also non-renewable sources because once depleted, they cannot be replenished on a human timescale.
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