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Fertiliser Technology

Fertiliser Technology
Which of the following is a natural inorganic fertiliser?

Gobar mannure
Chile salt petre
Oilcake
None of these

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Fertiliser Technology
A fertiliser contains 82% N₂. It could be

None of these
Ammonium nitrate
Liquid NH₃
Urea

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Fertiliser Technology
Ammonium sulphate fertiliser is

A basic fertiliser
The highest concentration nitrogenous fertiliser
The best fertiliser for paddy
A neutral fertiliser

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Fertiliser Technology
Temperature and pressure in ammonia converter is

450 atm, 1000°C
450 atm, 550°C
450 atm, 200°C
200 atm, 1000°C

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Fertiliser Technology
Phosphorus vapour comprises of

P₃
P₂
P₄
P

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Fertiliser Technology
Low grade phosphate rock can be used in electrical furnace, because

It is cheap
CaO content is less
Of the better CaO/SiO₂ balance for slag formation
It produces low cost product

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