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Fertiliser Technology

Fertiliser Technology
Rock phosphate constitutes mainly of

Mono-calcium phosphate
Fluorapatite
Di-ammonium phosphate
Di-calcium phosphate

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Fertiliser Technology
In the manufacture of urea, the intermediate chemical formed is

Ammonium carbonate
Ammonium carbamate
Biuret
None of these

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Fertiliser Technology
Phosphatic fertiliser is graded based on its __________ content.

PCl5
P₂O₃
P₂O₅
H₃PO₄

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Fertiliser Technology
Reaction of phosphate rock with 98% H₂SO₄ produces

White phosphorous
Superphosphate
None of these
Orthophosphoric acid

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Fertiliser Technology
Iron is not used alone as a catalyst in ammonia synthesis, because

None of these
It decomposes ammonia
It gets oxidised above 500°C
Its activity declines rapidly, if heated to above 520°C

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Fertiliser Technology
Coal based fertiliser plants at Ramagundam (Andhra Pradesh) and Talchar (Orissa)

Use coal for heating purpose
Use coal as conditioner in fertiliser
Use coal as filler in fertiliser
Gasify coal to get hydrogen from coal gas

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