Correct answer: (c) I, II and III
Explanation
- A
I and II only
I and II only. That drops aviation e-fuels. DAC carbon plus hydrogen is a standard Power-to-Liquid route.
- B
III only
III only. Sequestration and use in plastics/food are also correct, not only aviation.
- C
I, II and III
I, II and III. DAC pulls CO2 from ambient air. That CO2 can be stored (sequestration), used as a carbon feedstock in plastics and in food-grade carbonation, or combined with hydrogen to make synthetic aviation fuel.
- D
None of the above statements is correct
None. All three uses are on the technology tree.
Summary. Official key is (c): Direct Air Capture can sequester CO2, feed plastics and food processing, and supply carbon for aviation e-fuels. (a) drops aviation; (b) keeps only aviation; (d) empties a technology that does all three.
Same topic · past papers
UPSC has asked this before
These previous-year questions sit on the same topic. Open one to practise the earlier ask.