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Fertiliser Technology

Fertiliser Technology
P₂O₅ content in superphosphate is about __________ percent.

85-90
65-70
30-35
15-20

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Fertiliser Technology
A potassic fertiliser contains 50% K₂O. It could be

None of these
A mixture of NaCl+ KCl
Potassium chloride
Potassium sulphate

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Fertiliser Technology
Action of phosphoric acid on rock phosphate produces

Diammonium phosphate
Superphosphate
Triple superphosphate
Nitrophosphate

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Fertiliser Technology
P₂O₅ percentage in the phosphoric acid produced by wet process is about

50
70
10
30

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Fertiliser Technology
Use of catalyst is a must in the ammonia manufacture, because the reaction is reversible as well as the heat of dissociation of N₂ & H₂ is high. The presence of promoter along with the catalyst helps in __________ of the catalyst.

Stabilisation
Increasing the effectiveness
Improving the strength & heat resistance
All of these

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

25-28
75-80
52-54
> 98

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