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Fertiliser Technology

Fertiliser Technology
__________ is the most suitable fertiliser for paddy.

Superphosphate
Ammonium sulphate
Urea
Potassium nitrate

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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

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

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Fertiliser Technology
Reaction of nitric acid and sulphuric acid with phosphate rock produces

Tricresyl phosphate
Diammonium phosphate
Nitrophosphate
Tributyl phosphate

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Fertiliser Technology
Low grade coal is __________ to produce ammonia synthesis gas.

Liquefied
Hydrogenated
Gasified
Dehydrogenated

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Fertiliser Technology
Color of nitric acid is light yellow due to the presence of

NO
N₂H₅
NO₂
NH₃

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Fertiliser Technology
pH value of soil is maintained at __________ by the addition of fertiliser for optimum growth and health of the plant.

44020
44178
44084
43926

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