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Fertiliser Technology

Fertiliser Technology
Naphtha in a fertiliser plant is used as a source of

H₂
N₂
Fuel
O₂

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Fertiliser Technology
Fusion zone in the electric furnace used for reduction of phosphate rock to elemental phosphorous is maintained at __________ °C.

500-750
250-300
950-1050
1400-1450

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Fertiliser Technology
The essential ingradient of all the synthesis gas is

N₂
CO₂
H₂
O₂

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

Metaphosphoric acid
No change in it
None of these
Pyrophosphoric acid

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Fertiliser Technology
A fertiliser plant is classified as a gas based fertiliser plant, when it uses __________ gas as a source of hydrogen for the manufacture of ammonia.

Natural
Coal
Producer
Coke oven

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Fertiliser Technology
Which of the following does not come under the category of 'secondary nutrient' for plant growth?

Calcium
Oxygen
Magnesium
Sulphur

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