What Are Grey, Blue & Green Hydrogen? | Can Hydrogen Be Used in Engines? | NGHM | UPSC GS-III

Описание: Hydrogen is emerging as a critical pillar of the global clean-energy transition—but aspirants often remain confused about green, blue, grey and other colour-coded hydrogen. This video clears that confusion by building the concept from first principles and connecting it with current policy and exam relevance.

In this session, we begin with the basic chemistry of hydrogen, explaining why hydrogen is considered a clean fuel and how energy is released during combustion and electrochemical reactions. The video then clearly differentiates between grey, blue, green and other forms of hydrogen based on production pathways, carbon footprint, and technological feasibility.

We further explore:

Hydrogen fuel cells vs hydrogen combustion engines – working principles and applications
National Green Hydrogen Mission (India) – objectives, targets, and strategic importance
Global initiatives and hydrogen summits shaping the future hydrogen economy
Role of hydrogen in hard-to-decarbonise sectors such as steel, cement, fertilisers, shipping and aviation
To ensure exam readiness, the video concludes with:
2 Previous Year– MCQs for Prelims practice
1 GS-III Mains answer writing question with analytical focus

📌 Sources & Frameworks Used:
NCERT fundamentals, standard electrochemistry concepts, current policy developments, and UPSC-oriented analytical approach.

This video is designed as an evergreen conceptual resource for UPSC CSE aspirants preparing Science & Technology and Environment, useful across multiple exam cycles.

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#UPSCPreparation
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🔖 Relevant for:

UPSC CSE (Prelims & Mains) | GS Paper-III | Energy | Environment | Clean Technology | Climate Change