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Fertiliser Technology

Fertiliser Technology
__________ is required more for leafy crops.

Carbon
Phosphorous
Potassium
Nitrogen

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Fertiliser Technology
In the manufacture of orthophosphoric acid by strong H₂SO₄ leaching wet process, keeping the reactor temperature above 100°C, results in the formation of undesriable

Metaphosphoric acid
Pyrophosphoric acid
CaSO₄ .½H₂O and CaSO₄ crystals
All of these

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Fertiliser Technology
Fertiliser plant making ammonium sulphate employing gypsum-ammonia reaction (usual practice is to use ammonia and sulphuric acid) is located at

Baroda (under G.S.F.C.)
Sindri (under FCI)
Rourkela (under SAIL)
Bokaro (under SAIL)

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

Water holding capacity
Texture
All of these
Nutrient supply

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Fertiliser Technology
Heating of orthophosphoric acid to about 900°C, produces

None of these
Metaphosphoric acid
No change in it
Pyrophosphoric acid

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Fertiliser Technology
Urea is a better fertilizer than ammonium sulphate, because

It is easy to manufacture
Nitrogen content is higher
It is cheaper
It is not poisonous

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