Write a few lines on the utility of hydrogen as a fuel.

Explanation

Hydrogen as a fuel :
`to` The heat of combustion of hydrogen is high i.e about 242kj/mole. Hence hydrogen is used as industrial fuel.
`to` The energy released by the combustion of dihydrogen is more than the petrol (3 times).
`to` Hydrogen is major constituent in fuel gases like coal gas and water gas.
`to` Hydrogen is also used in fuel cells for the generation of electric power.
`to` 5% dihydrogen is used in CNG for running four-wheeler vehicles.
`to` By hydrogen economy principle the storage and transportation of energy in the form of liquid (or) gaseous state. Here energy is transmitted in the form of dihydrogen and not as electric power.