Chemical Process
Hydrogen gas is not produced commercially (for nitrogeneous fertiliser manufacture) by

Iron-steam reaction
Electrolysis of water
Steam reforming of naphtha
Its cryogenic separation from coke oven gas

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Chemical Process
Shaving soaps are

High free alkali soaps having excess of cane sugar and alcohol
None of these
Metalic soaps compounded with frothing agents
Soft potassium soaps (potassium salt of fatty acid) with free stearic acid to give lather a lasting property

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Chemical Process
Vulcanisation of rubber

Increases its ozone & oxygen reactivity
Decreases its tensile strength
Converts its plasticity into elasticity
Increases its oil & solvent resistance

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