Fertiliser Technology
Commercial production of hydrogen for the manufacture of nitrogeneous fertilisers is done by

Cryogenic separation of hydrogen from coke oven gas
Steam reforming of naphtha and cracking of natural gas
Electrolysis of water
All of these

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Fertiliser Technology
Potassic fertilisers

None of these
Help in development of starches of potatoes and grain
Are useful during early stage of the plant growth
Stimulate early growth and accelerate seeding

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