Question

write a few lines on the utility of hydrogen as fuel

Answer 1

Hydrogen fuel is a zero-emission fuel when burned with oxygen, if one considers water not to be an emission. It often uses electrochemical cells, or combustion in internal engines, to power vehicles and electric devices. It is also used in the propulsion of spacecraft and might potentially be mass-produced and commercialized for passenger vehicles and aircraft.

Answer 2

this is the my answer ok. This is simple 4 marks question which our sir told for me