FERTILISER TECHNOLOGY QUIZ

Sodium tri poly phosphate (STPP) is chemically represented as

Na₄P3O₈

Na₃P4O₆

Na₂PO₄

Na₅P3O₁₀

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Urea is formed only

At very low pressure (vacuum)

In vapour phase

In liquid phase

At very high temperature

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Vapor phase reaction of ammonia & nitric acid to produce ammonium nitrate is termed as the __________ process.

Le-chatlier's

Haber's

Du-pont's

Stengel

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Calcium ammonium nitrate (CAN) is

A complex fertiliser

A straight fertiliser

A mixed fertiliser

Not a fertiliser ; it is an explosive

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(CH₃ C₆ H₄)₃ PO₄ is the chemical formula of

Superphosphate

Triple superphosphate

Tricresyl phosphate

Flourapatite

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A phosphatic fertiliser contains 16% P₂O₅. It could be

Superphosphate

None of these

Triple superphosphate

Dicalcium phosphate

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Reaction of dilute sulphuric acid with phosphate rock produces

Superphosphate

Gypsum

Triple superphosphate

Phosphoric acid

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Fertiliser plants get their N₂ requirements

From producer gas

From coal gas (coke oven gas)

By dissociating oxides of nitrogen

By fractionation of liquified air

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A nitrogenous fertiliser contains 20% N₂. It could be

Calcium ammonium nitrate (CAN)

Ammonium nitrate

Urea

Ammonium chloride

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Effectiveness of a fertiliser is independent of the

None of these

PH of soil

Nature of soil

Type of crop

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