GSI Discovers Natural Hydrogen Reserves in Andaman
Why focus: GS1/GS3 Geography: First Indian white hydrogen find. Perfect for Assertion-Reason testing serpentinized pillow basalt and South Andaman geology.
In News
What Happened
Why It Matters
Background
History & Context
What Changed
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Hydrogen Sourcing: BEFORE, hydrogen in India was exclusively manufactured via electrolysis (green), steam methane reforming (grey), or coal gasification (brown). NOW, India has confirmed geological reserves of naturally occurring (white) hydrogen.
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Exploration Focus of GSI: BEFORE, GSI's primary energy exploration was limited to fossil fuels like coal and lignite, alongside geothermal hotspots. NOW, native hydrogen exploration has been officially integrated into GSI's critical resource assessment portfolio.
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Andaman's Geostrategic Utility: BEFORE, the Andaman and Nicobar islands were primarily viewed through the lens of maritime security and biodiversity conservation. NOW, the islands are positioned as a potential hub for clean energy extraction due to their ophiolite rock complexes.
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Resource Classification: BEFORE, hydrogen was treated solely as an industrial manufactured product governed largely by the Ministry of New and Renewable Energy. NOW, naturally occurring hydrogen falls under the purview of mineral exploration by the Ministry of Mines.
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Utility of Pillow Basalts: BEFORE, pillow basalts in India were mainly studied for academic paleomagnetic data and tectonic history. NOW, their serpentinized variations are actively evaluated as commercial source rocks for continuous hydrogen generation.
What Did NOT Change
Despite the groundbreaking discovery, the commercial extraction and deep-drilling technologies for white hydrogen remain unproven at scale in India. Furthermore, the broader National Green Hydrogen Mission continues to allocate its massive subsidies toward electrolyzer-based green hydrogen manufacturing rather than pivoting entirely to natural hydrogen mining.
Prelims Angle
NCERT Connection
Common Misconceptions
✗ White hydrogen is a finite fossil fuel that takes millions of years to form, similar to coal or petroleum.
✓ White hydrogen is continuously generated in the Earth's crust through ongoing geological processes like serpentinization and radiolysis, acting more like a continuously replenishing renewable resource.
People equate all underground gas reserves mined from the earth with ancient, non-renewable fossil fuels.
✗ Hydrogen is strictly color-coded by the physical appearance of the gas.
✓ The 'colors' of hydrogen (white, green, blue, grey) refer exclusively to its production method or source, not the actual color of the invisible gas. White means naturally occurring.
The nomenclature 'white', 'green', and 'blue' creates a visual association rather than an industrial one.
Practice Questions
Q1
How Many CorrectConsider the following statements regarding Natural (White) Hydrogen and its recent discovery in India: 1. It is primarily generated through the process of serpentinization, which involves the reaction of water with iron-rich ultramafic rocks. 2. India's first white hydrogen reserves were discovered by the GSI in the sedimentary limestone basins of the Vindhyan range. 3. Unlike green hydrogen, white hydrogen does not require energy-intensive water electrolysis for its production. How many of the above statements are correct?
Q2
Match the FollowingMatch the following hydrogen 'color' nomenclatures with their respective production methods: List I (Hydrogen Type) A. Green Hydrogen B. Blue Hydrogen C. Grey Hydrogen D. White Hydrogen List II (Production Source/Method) 1. Steam Methane Reforming without carbon capture 2. Geologically occurring in underground formations 3. Electrolysis of water using renewable energy 4. Natural gas reforming with Carbon Capture and Storage (CCS) Select the correct code:
Q3
Assertion & ReasonAssertion (A): The Andaman and Nicobar Islands are highly prospective for white hydrogen exploration. Reason (R): The region contains obducted fragments of ancient oceanic crust and upper mantle known as ophiolites, which host ultramafic rocks capable of ongoing serpentinization. Select the correct answer from the codes below: