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Fertiliser Technology

Fertiliser Technology
Yield of elemental phosphorous from rock phosphate is about __________ percent.

15-25
40-45
60-65
1-2

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Fertiliser Technology
Fertilizer plant getting its hydrogen requirement partly from coke oven gas is situated at

Talchar (under FCI)
Nangal (under NFL)
Rourkela (under SAIL)
Barauni (under HFC)

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Fertiliser Technology
Reaction of orthophosphoric acid with soda ash produces

Tricresyl phosphate
Nitrophosphate
Sodium tripolyphosphate (STPP)
Tributyl phosphate

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Fertiliser Technology
Biuret formation in urea is kept at minimum (< 1 %), because it is

Corrosive in nature
Helpful in decomposition of urea
Explosive in nature
Toxic and harmful to some crops

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Fertiliser Technology
Reaction of nitric acid and sulphuric acid with phosphate rock produces

Tricresyl phosphate
Tributyl phosphate
Nitrophosphate
Diammonium phosphate

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Fertiliser Technology
Bio-fertilisers are cheaper, renewable and pollution free. They improve the __________ of the soil.

Texture
All of these
Nutrient supply
Water holding capacity

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