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Fertiliser Technology

Fertiliser Technology
The main constituent of rock phosphate is

Di-calcium phosphate
Mono-calcium phosphate
None of these
Fluorspar

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

Na₃P4O₆
Na₂PO₄
Na₅P3O₁₀
Na₄P3O₈

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Fertiliser Technology
Phosphoric acid is produced in wet process from phosphate rock and

Concentrated NHO₃
Dilute H₂SO₄
Concentrated HCl
Concentrated H₂SO₄

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Fertiliser Technology
In __________ converter for ammonia synthesis, the catalyst is arranged in the form of a single continuous bed.

Udhe
Fauser-Monte Catini
Kellog
Claude

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Fertiliser Technology
During nitric acid manufacture, catalytic oxidation of ammonia at 800°C in presence of platinum catalyst produces nitrogen oxide. Conversion of NH₃ to NO is about __________ percent.

38
82
98
68

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Fertiliser Technology
Catalyst used in Haber's process for ammonia production is

Nickel
Reduced iron oxide
Silica gel
Vanadium pentoxide

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