UPSC Previous Year Question | Prelims GS | 2017

In the context of mitigating the impending global warming due to anthropogenic emissions of carbon dioxide, which of the following can be the potential sites for carbon sequestration? 1. Abandoned and uneconomic coal seams 2. Depleted oil and gas reservoirs 3. Subterranean deep saline formations Select the correct answer using the code given below:

  1. 1 and 2 only
  2. 3 only
  3. 1 and 3 only
  4. 1, 2 and 3

Answer

Correct Answer

1, 2 and 3

Explanation

All three — abandoned coal seams, depleted oil/gas reservoirs, and deep saline aquifer formations — are recognized geological sites for carbon capture and storage (CCS) as CO2 sequestration reservoirs.

Topics: carbon sequestration sites, climate change mitigation, environment and ecology, geography