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

1. A. Extraction of rare earth elements
2. B. Natural gas extraction technologies
3. C. Hydrogen fuel-based automobiles
4. D. Waste-to-energy technologies

Answer: D

Explanation

Pyrolysis: Pyrolysis is the process of heating organic material at high temperatures in the absence of oxygen. Plasma Gasification: Plasma gasification is an extreme thermal process using plasma which converts organic matter into a syngas (synthesis gas) which is primarily made up of hydrogen and carbon monoxide.