Prelims 2025 · Science and Technology · Question 16
With reference to 'Direct Air Capture', an emerging technology, which of the following statements is/are correct? I. It can be used as a way of carbon sequestration. II. It can be a valuable approach for plastic production and in food processing. III. In aviation, it can be a source of carbon for combining with hydrogen to create synthetic low-carbon fuel. Select the correct answer using the code given below.
Answer
I, II and III
I. Correct. Direct Air Capture (DAC) removes CO2 directly from ambient air; if this captured CO2 is stored underground or mineralized, it serves as carbon sequestration.
II. Correct. Captured CO2 can be used as a feedstock in making chemicals/plastics and is also used in the food industry (e.g., carbonation, processing applications).
III. Correct. In aviation, DAC-derived CO2 can be combined with green hydrogen to produce synthetic low-carbon fuels (e-fuels/SAF).
Hence, all three statements are correct.