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Fertiliser Technology

Fertiliser Technology
Nitro-phosphate (manufactured at Trom-bay) is a __________ fertiliser.

Highly hygroscopic
Highly explosive
Complex
Mixed

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Fertiliser Technology
Oxidation of ammonia is

Endothermic
Exothermic
Non-catalytic
Autocatalytic

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Fertiliser Technology
HPO₃ is the chemical formula of __________ phosphoric acid.

None of these
Ortho
Pyro
Meta

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Fertiliser Technology
Liquid ammonia is not used as such a fertiliser in tropical countries like India, because

It will evaporate on spraying
It is very costly
It is not available
Its N₂ content is very low

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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
800-900
250-400

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

Biuret
Carbon dioxide
Ammonium carbonate
Ammonium carbamate

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