Carbon sequestration sites for climate mitigation
Question
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?
Select the correct answer using the code given below:
- 1.
Abandoned and uneconomic coal seams
- 2.
Depleted oil and gas reservoirs
- 3.
Subterranean deep saline formations
Options
1 and 2 only
3 only
1 and 3 only
1, 2 and 3
Explanation
All three options represent viable carbon sequestration sites. Statement 1 is correct: Abandoned coal seams can store CO2 in their porous structure. Statement 2 is correct: Depleted oil and gas reservoirs have proven storage capacity and integrity, making them suitable for permanent CO2 storage. Statement 3 is correct: Deep saline formations in the subterranean layer are among the most promising sites for large-scale carbon dioxide storage due to their vast capacity and appropriate geological properties. These geological structures have been studied extensively for Geological Carbon Sequestration (GCS). > KEY INSIGHT: Carbon sequestration can utilize existing geological infrastructure (old mines, oil/gas fields) and natural saline formations, all with proven storage capacity. Answer: (d).
Question details
Year
2017
Paper
GS Paper 1
Question
Q25
Subject
Environment
Sub-topic
Climate change and carbon management
Type
Statement-based
Difficulty
Medium
Nature
Static
Source hint
NCERT Environmental Science, Climate Change
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