hydrogen is an enormousy attractive fuel because it is enviromently clean.'Hydrogen economy' isa newfield in which it is thought that our energy needs can be met by gaaseous, liquid and solid hydrogen. Since hydrogen is not a naturally occuring substance like coal, oil or natural gas, energy must be expended to produce hydrogen before it can be used. Current researches are therefore, on finding cheaper methods for extracting hydrogen. Liquid H_(2) has been used as a rocket fuel because of

hydrogen is an enormousy attractive fuel because it is enviromently cl

1.	hydrogen is an enormousy attractive fuel because it is enviromently clean.'Hydrogen economy' isa newfield in which it is thought that our energy needs can be met by gaaseous, liquid and solid hydrogen. Since hydrogen is not a naturally occuring substance like coal, oil or natural gas, energy must be expended to produce hydrogen before it can be used. Current researches are therefore, on finding cheaper methods for extracting hydrogen. Liquid H_(2) has been used as a rocket fuel because of
Answer» High thrust Its REACTION with oxygen is highly exothermic SMALL space it occupies All these are correct Solution :(d) Liquid `H_(2)` has all these characteristics.