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Fertiliser Technology

Fertiliser Technology
Oxidation of ammonia is

Non-catalytic
Autocatalytic
Exothermic
Endothermic

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Fertiliser Technology
Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of __________ this is normally not done.

High corrosion rate
All of these
Increased biuret formation
Increased cost of equipment

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Fertiliser Technology
During nitric acid manufacture, catalytic oxidation of ammonia at 800°C in presence of platinum catalyst produces nitrogen oxide. Conversion of NH₃ to NO is about __________ percent.

82
98
68
38

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Fertiliser Technology
C/H ratio (by weight) of naphtha used in nitrogenous fertiliser making is about

20
6
13
2

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Fertiliser Technology
Calcium ammonium nitrate (CAN) is

Not a fertiliser ; it is an explosive
A mixed fertiliser
A complex fertiliser
A straight fertiliser

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Fertiliser Technology
Potassic fertiliser is graded based on its __________ content.

KNO₃
K₂SO₄
K₂O
KCl

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