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Fertiliser Technology

Fertiliser Technology
Liquid ammonia and 60% nitric acid reaction (which produces ammonium nitrate) is

None of these
Endothermic
Autocatalytic
Exothermic

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Fertiliser Technology
Potassic fertilisers do not promote the development of

Sugar of fruits & vegetables
Stems & leaves during early stage of plant growth
Fibrous materials of plants
Starches of potatoes & grains

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Fertiliser Technology
Prilling of urea should be accomplished (in a sprayer) just above the melting point of urea with minimum of retention time, otherwise it will result in

Substantially wet non-flowing and sticky product
Non-spherical prills
Biuret formation
Low bulk density product

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Fertiliser Technology
Phosphorus vapour comprises of

P
P₃
P₄
P₂

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Fertiliser Technology
Monte catini process is used for the manufacture of

Calcium ammonium nitrate (CAN)
Phosphoric acid
Urea
Nitric acid

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Fertiliser Technology
Lower temperature and large excess of ammonia in urea melt

Is undersirable
Increases biuret formation
Decreases biuret formation
Does not effect biuret formation

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