Mission Surya – Day 6: Hydrogen Fuel Cells & Repairability Index
Important science and technology topics including hydrogen fuel cells, ethanol blending, desert soilification and Project Waterworth.
20 February 2026
Day 6 discusses emerging technologies related to energy, digital infrastructure and sustainability.
Core Concepts
Right to Remember emphasises preserving traditional repair skills for technological sustainability.
Repairability Index evaluates availability of spare parts, repair documentation, cost and software support.
Hydrogen fuel cells generate electricity through electrochemical reactions producing water as a by-product.
Ethanol blending reduces fossil fuel dependence and lowers emissions.
Desert soilification technology converts desert sand into fertile soil.
Recent Technology Initiatives
• Project Waterworth is Meta’s ambitious subsea cable connectivity project.
• Bhargavastra is India’s micro-missile system to counter swarm drones.
• Rudrastra is a hybrid VTOL drone developed in India.
Quick Revision for Prelims
- • Right to Remember emphasises preserving traditional repair skills for technological sustainability.
- • Repairability Index evaluates availability of spare parts, repair documentation, cost and software support.
- • Hydrogen fuel cells generate electricity through electrochemical reactions producing water as a by-product.