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Fertiliser Technology

Fertiliser Technology
Chemical formula of biuret is

NH₂CONHCONH₂
NH₂.CO.NH₂
NH₃.COO.NH₃
NH₄COONH₂

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

Sulphur
Nitrogen
Phosphorous
Potassium

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Fertiliser Technology
Chemical formula of metaphosphoric acid is

H₃PO₄
H₄P₂O₇
Same as that of pyrophosphoric acid
HPO₃

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Fertiliser Technology
Heating of coke, sand & phosphate rock in an electric furnace is done for the manufacture of

Superphosphate
Phosphoric acid
Phosphorous
Triple superphosphate

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Fertiliser Technology
Heating of orthophosphoric acid to about 900°C, produces

Metaphosphoric acid
None of these
No change in it
Pyrophosphoric acid

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

Exothermic
Endothermic
Autocatalytic
None of these

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