In the context of which one of the following are the terms &

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

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[UPSC 2019 2 JUNE,Ecology and Environment 2017-2020]

A Extraction of rare earth elements

दुर्लभ पृथ्वी तत्वों का निष्कर्षण

B Natural gas extraction technologies

प्राकृतिक गैस निष्कर्षण प्रौद्योगिकी

C Hydrogen fuel-based automobiles

हाइड्रोजन ईंधन आधारित ऑटोमोबाइल

D Waste-to-energy technologies

अपशिष्ट-से-ऊर्जा प्रौद्योगिकियां

Like incineration; pyrolysis, gasification and plasma technologies are thermal p...

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