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Fertiliser Technology

Fertiliser Technology
Triple superphosphate is made by reacting phosphate rock with __________ acid.

Hydrochloric
Phosphoric
Sulphuric
Nitric

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Fertiliser Technology
Chemical formula of biuret is

NH₂CONHCONH₂
NH₄COONH₂
NH₃.COO.NH₃
NH₂.CO.NH₂

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Fertiliser Technology
Catalyst used in desulphurisation of naphtha is

Pt-Rh
Silica gel
Nickel
Co-Mo

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Fertiliser Technology
Gas based fertiliser plants use

Natural gas as heating medium
Coal gas as a source of hydrogen
Natural gas as a source of hydrogen
Coal gas as heating medium

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Fertiliser Technology
Tricresyl phosphate is chemically represented as

Ca₁₀(PO₄)3F₆
(CH₃ C₆ H₄)₃ PO₄
(NH₄)₂HPO₄
NH₄H₂PO₄

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Fertiliser Technology
Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of __________ this is normally not done.

Increased cost of equipment
High corrosion rate
All of these
Increased biuret formation

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