Consider the following activities:
1. Spreading finely ground basalt rock on farmlands extensively
2. Increasing the alkalinity of oceans by adding lime
3. 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?

Only one

Only two

All three

None

APEDIA

UPSC Prelims

2023 • 28 May, 2023 • Paper-1

Consider the following activities:

1. Spreading finely ground basalt rock on farmlands extensively
2. Increasing the alkalinity of oceans by adding lime
3. 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?

Correct Answer

All three

Subject: Environment.Context: Carbon Capture and Storage (CCS) Technologies.Details: All three are viable theoretical or experimental methods for carbon sequest......

💡 Analysis & Explanation

Subject ▼

Environment.

Context ▼

Carbon Capture and Storage (CCS) Technologies.

Details ▼

All three are viable theoretical or experimental methods for carbon sequestration. Statement 1 describes 'enhanced weathering', where crushed silicate rocks absorb CO2. Statement 2 describes 'ocean alkalinization' to boost the ocean's carbon sink capacity. Statement 3 refers to direct geological storage by trapping CO2 in deep, unmineable coal seams or abandoned mines.

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