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Fertiliser Technology

Fertiliser Technology
Triple superphosphate which contains about 46% P₂O₅ is produced by the reaction of phosphate rock with ortho phosphoric acid of____percent concentration.

> 98
25-28
52-54
75-80

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Fertiliser Technology
Yield of elemental phosphorous from rock phosphate is about __________ percent.

60-65
1-2
40-45
15-25

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Fertiliser Technology
Nitrogen content of a nitrogenous fertiliser is 35%. It could be

Ammonium nitrate
Ammonium sulphate
Calcium ammonium nitrate (CAN)
Urea

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Fertiliser Technology
In the manufacture of orthophosphoric acid by strong H₂SO₄ leaching wet process, keeping the reactor temperature above 100°C, results in the formation of undesriable

All of these
Pyrophosphoric acid
CaSO₄ .½H₂O and CaSO₄ crystals
Metaphosphoric acid

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Fertiliser Technology
Reaction of dilute sulphuric acid with phosphate rock produces

Gypsum
Phosphoric acid
Triple superphosphate
Superphosphate

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Fertiliser Technology
Urea is a __________ fertiliser.

Nitrogenous
None of these
Potassic
Phosphatic

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