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Prelims 2023 · Q99 · Energy technologies

Consider the following heavy industries :

  1. 1.Fertilizer plants
  2. 2.Oil refineries
  3. 3.Steel plants

Green hydrogen is expected to play a significant role in decarbonizing how many of the above industries?

Show answer

Answer: C. Green hydrogen can replace grey hydrogen in making ammonia for fertilizers, replace fossil hydrogen used in oil refining, and replace coal in steel-making through direct reduction of iron. So it can help decarbonise all three.

Watch for: Steel seems coal-bound, but hydrogen-based direct reduced iron is a major decarbonisation route.

Why the other options are wrong
  • A. Wrong because green hydrogen is relevant to all three industries.
  • B. Wrong because green hydrogen is relevant to all three industries.
  • D. Wrong because all three industries already use or can use hydrogen.

Source to check: Ministry of New and Renewable Energy, National Green Hydrogen Mission document (January 2023)

Answer from the official UPSC key. Written and fact-checked by AI against the official key. Spotted a mistake? Report it.