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FERTILISER TECHNOLOGY

Fertiliser Technology
Electric process as compared to wet process (for the manufacture of phosphoric acid)

Produces a valuable by-product called gypsum
Is used less frequently
Can use only high grade phosphate rock
Is weak acid process

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Fertiliser Technology
Conditioners like finely divided peat are added to the fertiliser to

Increase its solubility
Counteract burning
Avoid caking & hardening
Produce bulk

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Fertiliser Technology
Gas based fertiliser plants use

Coal gas as a source of hydrogen
Coal gas as heating medium
Natural gas as a source of hydrogen
Natural gas as heating medium

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Fertiliser Technology
Ammonium nitrate (is mixed with limestone) is not used as fertiliser as such, because

It is highly acidic in nature
It is hygroscopic and explosive in nature
Its nitrogen content is very less
It is a liquid at room temperature

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Fertiliser Technology
Triple superphosphate is made by reacting phosphate rock with __________ acid.

Hydrochloric
Nitric
Phosphoric
Sulphuric

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