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@, , In laboratories, hydrogen peroxide is prepared from barium peroxide or acidified sulphate, solution., , Commercially, hydrogen peroxide is prepared by auto-oxidation of 2-ethylanthraquinol., , Strength of hydrogen peroxide solution is given in terms of the ‘volume of oxygen at NTP that, one volume of hydrogen peroxide gives on heating’., , Hydrogen peroxide has several uses. Its demand has increased as it is used in pollution control, treatment of domestic commercial effluents., , Hydrogen as a Fuel, , Hydrogen is an important alternative energy source., , The use of hydrogen as a fuel provides pollution-free energy as its combustion product is water., Heat of combustion per gram of hydrogen is more than twice that of jet fuel., , Hydrogen is explosive and so is difficult to handle., , The cost of the production of hydrogen is very high.