Which of the following is NOT a source of green energy?
A. Solar energy
B. Coal-based thermal power
C. Wind energy
D. Hydroelectric energy
1 answer
Best answer
Answer: B. Coal-based thermal power
Burning coal releases \(\text{CO}_2\), sulphur oxides and fly ash, which harm the environment.
Doubtly AI
· 24 Oct 2026
AI-verified · Oct 2026
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