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Fertiliser Technology

Fertiliser Technology
Urea (a nitrogeneous fertiliser) is produced from carbon dioxide and

Nitric oxide
Nitric acid
Ammonium nitrate
Ammonia

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Fertiliser Technology
Nitrogen content of urea is about __________ percent.

80
46
94
10

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Fertiliser Technology
Electric process as compared to wet process (for the manufacture of phosphoric acid)

Produces a valuable by-product called gypsum
Is weak acid process
Is used less frequently
Can use only high grade phosphate rock

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Fertiliser Technology
Catalyst used in Haber's process for ammonia production is

Nickel
Silica gel
Vanadium pentoxide
Reduced iron oxide

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Fertiliser Technology
Which is the best fertiliser for paddy?

Nitro-phosphate
Potassium nitrate
Ammonium sulphate
Superphosphate

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Fertiliser Technology
Dehydration of ammonium carbamate to yield urea is a/an __________ reaction.

Catalytic
Endothermic
Autocatalytic
Exothermic

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