Answer:
Hydrogen is used daily as a gas and liquid by many industries, including the petroleum industry and in manufacturing processes for producing chemicals, foods and electronics. Towngas, a fuel used in the early part of the 20th century, was 50% hydrogen. Hydrogen is used as a fuel for the NASA space shuttle.
more uses :
commercial fixation of nitrogen from the air in the Haber ammonia process.
hydrogenation of fats and oils.
methanol production, in hydrodealkylation, hydrocracking, and hydrodesulfurization.
rocket fuel.
welding.
production of hydrochloric acid.
reduction of metallic ores.
