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Fertiliser Technology

Fertiliser Technology
Which of the following fertilisers is used as a cattle feed?

Ammonium sulphate
Calcium ammonium nitrate
Urea
Superphosphate

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Fertiliser Technology
A phosphatic fertiliser contains 16% P₂O₅. It could be

None of these
Triple superphosphate
Superphosphate
Dicalcium phosphate

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

Ammonium sulphate
Urea
Ammonium nitrate
Calcium ammonium nitrate (CAN)

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Fertiliser Technology
Which of the following does not come under the category of'primary nutrient' for plant growth?

Potassium
Phosphorous
Sulphur
Nitrogen

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Fertiliser Technology
In ammonia synthesis (N₂ + 3H₂ = 2NH₃), there is a decrease in total volume, hence to get high equilibrium conversion, the reaction should be carried out at

Low pressure
High pressure
Very high temperature
Atmospheric pressure; as the pressure has no effect on conversion

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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

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

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