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Fertiliser Technology

Fertiliser Technology
__________ is the undesirable by-product produced in the manufacture of urea.

Biuret
Ammonium carbonate
Carbon dioxide
Ammonium carbamate

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Fertiliser Technology
Which of the following is not a mixed fertiliser?

Ammonium phosphate
Calcium ammonium nitrate (CAN)
None of these
Nitrophosphate

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Fertiliser Technology
The most suitable fertiliser for accelerating seeding or fruit formation in later stages of plant growth is __________ fertiliser.

Phosphatic
Potassic
None of these
Nitrogenous

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Fertiliser Technology
__________ catalyst is used in the production of urea from CO₂ and NH₃.

No
Vanadium pentoxide
Nickel
Alumina

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Fertiliser Technology
In the manufacture of H₃ PO₄ (ortho), ; strong H₂ SO₄ leaching wet process as compared to electric furnace process

Is very costly
Requires lower capital investment in the plant
Produces lower purity acid
Uses lower grade phosphate rock

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Fertiliser Technology
Conversion of yellow phosphorous to red phosphorous is done by heating it in covered retorts at __________ °C in absence of air.

1000-1200
50-80
250-400
800-900

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