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In the context of which one of the following are the terms 'pyrolysis and plasma gasification' mentioned?

AExtraction of rare earth elements
BNatural gas extraction technologies
CHydrogen fuel-based automobiles
DWaste-to-energy technologies
Answer & Solution
Correct answer: D. Waste-to-energy technologies
UPSC CSE Prelims 2019 (GS-I, Set A), Q.26. Official answer key: D.
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