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Topic Carbon sequestration
Asked 3 times in CSE over 3 years (2020–2023), peaking in 2020.
Key insights
- Most tested in CSE — 3 of 3 PYQs
- Most asked in 2020
- Recurs across 3 years (2020–2023)
Across exams
CSE · 3How the concept evolved
Rising — more than half its appearances (3 of 3) are since 2016.
Related concepts
Ideas UPSC tests alongside this one — keep exploring.
Sample questions
You've seen the pattern — here are a few of the actual PYQs.
CSE2023
Consider the following activities
- Spreading finely ground basalt rock on farmlands extensively
- Increasing the alkalinity of oceans by adding lime
- Capturing carbon dioxide released by various industries and pumping it into abandoned subterranean mines in the form of carbonated waters
How many of the above activities are often considered and discussed for carbon capture and sequestration?
- A Only one
- B Only two
- C All three ✓
- D None
✓ Correct answer: (C)
Environment & Ecology › Climate Change
CSE2021
What is blue carbon?
- A Carbon captured by oceans and coastal ecosystems
- B Carbon sequestered in forest biomass and agricultural soils
- C Carbon contained in petroleum and natural gas
- D Carbon present in atmosphere ✓
✓ Correct answer: (D)
Environment & Ecology › Climate Change
CSE2020
What is/are the advantage/advantages of zero tillage in agriculture ?
- Sowing of wheat is possible without burning the residue of previous crop
- Without the need for nursery of rice saplings, direct planting of paddy seeds in the wet soil is possible
- Carbon sequestration in the soil is possible
Select the correct answer using the code given below :
- A 1 and 2 only
- B 2 and 3 only
- C 3 only
- D 1, 2 and 3 ✓
✓ Correct answer: (D)
Agriculture › Crops & Cropping Systems
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