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Fertiliser Technology

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

Na₃P4O₆
Na₅P3O₁₀
Na₂PO₄
Na₄P3O₈

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Fertiliser Technology
NPK fertiliser is a __________ fertiliser.

Nitrogenous
Mixed
Phosphatic
Complex

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Fertiliser Technology
Triple superphosphate which contains about 46% P₂O₅ is produced by the reaction of phosphate rock with ortho phosphoric acid of____percent concentration.

75-80
52-54
> 98
25-28

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Fertiliser Technology
Main component of bone ash is

Calcium carbonate
Calcium phosphate
Sodium phosphate
Calcium sulphate

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Fertiliser Technology
Urea is a __________ fertiliser.

None of these
Nitrogenous
Phosphatic
Potassic

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Fertiliser Technology
Which of the following fertilisers is needed for promoting the development of leaves and stems during early stages of plant growth?

None of these
Potassic fertiliser
Phosphatic fertiliser
Nitrogeneous fertiliser

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