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Topic Decarbonization
Asked 4 times across 3 UPSC exams over 4 years (2022–2026), peaking in 2023.
Key insights
- Most tested in CSE — 2 of 4 PYQs
- First appeared in ESE 2022 — 1 years before CSE 2023 (allied exams preview CSE)
- Most asked in 2023
- Recurs across 3 years (2022–2026)
How it travelled across exams
First appearance in each exam — the same idea, reframed.
ESE 2022 → CSE 2023 → CDS 2023
How the concept evolved
Rising — more than half its appearances (4 of 4) are since 2016.
Related concepts
Ideas UPSC tests alongside this one — keep exploring.
Sample questions
You've seen the pattern — here are a few of the actual PYQs.
CSE2026
Which of the following statements with regard to Green Hydrogen is/are correct?
- It is decarbonized hydrogen obtained from natural gas reforming combined with carbon capture and storage (CCS)
- It is produced using electrolysis of water with electricity generated by renewable energy
- National Green Hydrogen Mission of India aims for abatement of nearly 50 MMT of annual greenhouse gas emissions by 2030
- A 1 only
- B 2 and 3 only ✓
- C 2 only
- D 1, 2 and 3
✓ Correct answer: (B)
Science & Technology › Energy & Nuclear
CSE2023
Consider the following heavy industries
- Fertilizer plants
- Oil refineries
- 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
✓ Correct answer: (C)
Science & Technology › Energy & Nuclear
CDS2023
Which of the following statements about the 'Race to Zero Campaign' is/are correct ?
- One of the main objectives of the Race to Zero Campaign is to build momentum around the shift to a decarbonized economy
- It is related to the theory of Zero-Sum Game
Select the correct answer using the code given below :
- A 1 only ✓
- B 2 only
- C Both 1 and 2
- D Neither 1 nor 2
✓ Correct answer: (A)
Environment & Ecology › Climate Change
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