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Fertiliser Technology

Fertiliser Technology
The concentration (weight %) of nitric acid produced by the oxidation of ammonia and absorption of nitrogen oxides with water is about __________ percent.

100
30
60
95

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Fertiliser Technology
Sodium tri poly phosphate (STPP) is chemically represented as

Na₄P3O₈
Na₅P3O₁₀
Na₂PO₄
Na₃P4O₆

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Fertiliser Technology
In ammonia synthesis (N₂ + 3H₂ = 2NH₃), there is a decrease in total volume, hence to get high equilibrium conversion, the reaction should be carried out at

High pressure
Atmospheric pressure; as the pressure has no effect on conversion
Very high temperature
Low pressure

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Fertiliser Technology
The most suitable fertiliser for accelerating seeding or fruit formation in later stages of plant growth is __________ fertiliser.

Potassic
Phosphatic
None of these
Nitrogenous

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

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

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Fertiliser Technology
Steam reforming of naphtha produces ammonia synthesis gas. This is a/an __________ process.

Autocatalytic
Non-catalytic
Exothermic
Endothermic

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