UPSC Prelims 2019·GS1·science-and-technology·science and technology

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

Dalvoy logo
Reviewed by Dalvoy
UPSC Civil Services preparation
Last updated 23 May 2026, 3:31 pm IST
  1. AExtraction of rare earth elements
  2. BNatural gas extraction technologies
  3. CHydrogen fuel-based automobiles
  4. DWaste-to-energy technologiesCorrect

Explanation

Pyrolysis and plasma gasification are advanced thermal treatment processes used to convert various types of waste materials (such as municipal solid waste, industrial waste, and biomass) into energy. Pyrolysis involves heating waste in the absence of oxygen to produce bio-oil, syngas, and char. Plasma gasification, on the other hand, uses extremely high temperatures generated by an electrically heated plasma torch to break down waste into a synthesis gas (syngas) and a vitrified inert slag. Both technologies are designed to minimize landfill waste and generate energy, aligning perfectly with waste-to-energy initiatives. Therefore, these terms are directly associated with waste-to-energy technologies.
science-and-technology: In the context of which one of the following are the terms 'pyrolysis and plasma gasification' mentioned?

Related questions

More UPSC Prelims practice from the same subject and topic.