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Prelims 2023 paper

UPSC CSE Prelims 2023 · GS Paper I · Question 99 · Defence, nuclear & energy technology

निम्नलिखित भारी उद्योगों पर विचार कीजिए :

UPSC Civil Services (Preliminary) Examination 2023, General Studies Paper I, Question 99 — Defence, nuclear & energy technology.

निम्नलिखित भारी उद्योगों पर विचार कीजिए :

  1. 1.उर्वरक संयंत्र
  2. 2.तेलशोधक कारखाने
  3. 3.इस्पात संयंत्र

उपर्युक्त में से कितने उद्योगों के विकार्बनन में हरित हाइड्रोजन की महत्त्वपूर्ण भूमिका होने की अपेक्षा है?

Read this question in English

Consider the following heavy industries:

1. Fertilizer plants

2. Oil refineries

3. Steel plants

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

(a) Only one · (b) Only two · (c) All three · (d) None

उत्तर और व्याख्या · explanation in English

Answer: (c) सभी तीन

All three. Green hydrogen, made by splitting water with renewable electricity, can replace the fossil-based hydrogen that fertilizer plants and refineries use today and the coal and coke that steel plants use for reducing iron ore. The Government of India names all three sectors in its National Green Hydrogen Mission.

  • ✓ 1. Ammonia for nitrogenous fertilizers is made from hydrogen obtained from natural gas. Green hydrogen, or green ammonia made from it, can replace that and cut gas imports.
  • ✓ 2. Refineries already use large amounts of hydrogen made from fossil fuels; swapping it for green hydrogen lowers a refinery's carbon footprint.
  • ✓ 3. Hydrogen can replace coal and coke in iron and steel production, one of the biggest carbon-emitting industries; the Mission funds pilot projects for low-carbon steel.

Remember · Green hydrogen targets hard-to-abate sectors: fertilizer (green ammonia), refining, steel, and long-haul transport and shipping. India's mission aims at 5 MMT a year by 2030.

Sources

Question and answer: UPSC's official GS Paper I (2023, Series A) — paper ↗ · answer key ↗. Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). ·

Cite this question: UPSC CSE Prelims 2023, Q99 — minimalistias.com/pyqs/prelims/2023/q99

In the UPSC syllabus: Defence, nuclear & energy technology › Energy technology: batteries, hydrogen, fusion See it and tick it covered →

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