UPSC PYQPrelims 2023

Civil Services Examination · Question 68

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?

  1. Only one
  2. Only two
  3. All three
  4. None
Show answer & explanation

Answer: (C) All three

Explanation

Enhanced rock weathering, ocean alkalinity enhancement and underground injection of CO2 are all discussed CCS approaches.