Facts for Prelims (FFP)
Source: TH
Context: Indian Oil Corporation (IOC) has introduced India’s first green hydrogen-powered bus, which emits only water vapour as its by-product.
- Green hydrogen is an environmentally friendly option as it only emits water vapour when burned and has three times the energy density of other fuels. It requires 50 units of renewable electricity and 9 kg of deionized water to produce one kilogram of green hydrogen.








