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Fertiliser Technology

Fertiliser Technology
Which of the following is a natural inorganic fertiliser?

None of these
Oilcake
Gobar mannure
Chile salt petre

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Fertiliser Technology
Iron is not used alone as a catalyst in ammonia synthesis, because

None of these
Its activity declines rapidly, if heated to above 520°C
It gets oxidised above 500°C
It decomposes ammonia

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Fertiliser Technology
Prilling tower is found in the flowsheet for the manufacture of

Ammonia
Triple superphosphate
Superphosphate
Urea

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Fertiliser Technology
Maximum nitrogen percentage is in

Urea
Ammonium sulphate
Liquid ammonia
Calcium ammonium nitrate

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Fertiliser Technology
Reaction of dilute sulphuric acid with phosphate rock produces

Superphosphate
Triple superphosphate
Gypsum
Phosphoric acid

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

Counteract burning
Produce bulk
Increase its solubility
Avoid caking & hardening

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