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FERTILISER TECHNOLOGY

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

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

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

Increase its solubility
Avoid caking & hardening
Produce bulk
Counteract burning

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Fertiliser Technology
Gas based fertiliser plants use

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

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

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

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

Phosphoric
Hydrochloric
Sulphuric
Nitric

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