gs1medium

In the context of mitigating the impending global warming due to anthropogenic emissions of carbon dioxide, which of the following can be potential sites for carbon sequestration?

  1. 1.Abandoned and uneconomic coal seams
  2. 2.Depleted oil and gas reservoirs
  3. 3.Subterranean deep saline formations

Select the correct answer using the code given below:

  1. A.1 and 2 only
  2. B.3 only
  3. C.1 and 3 only
  4. D.1, 2 and 3
▶ Answer & Explanation

Correct answer: D. 1, 2 and 3

Carbon sequestration involves capturing and storing atmospheric carbon dioxide. Abandoned coal seams can absorb CO2 due to their porous nature. Depleted oil and gas reservoirs offer pre-existing geological containment for injected CO2. Deep saline formations are vast underground porous rock layers saturated with brine, providing significant storage capacity and isolation.

Source: UPSC gs1 2017

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