FERTILISER TECHNOLOGY QUIZ

Ammonium nitrate (is mixed with limestone) is not used as fertiliser as such, because

It is hygroscopic and explosive in nature

It is a liquid at room temperature

It is highly acidic in nature

Its nitrogen content is very less

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Superphosphate

Flourapatite

Tricresyl phosphate

Triple superphosphate

TRUE ANSWER : ?
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Base suspension fertiliser essentially contains

43% K₂O and 43% P₂O₅

43% N₂ and 13% P₂O₅

13% N₂ and 43% P₂O₅

43% N₂ and 13% K₂O

TRUE ANSWER : ?
YOUR ANSWER : ?

A potassic fertiliser contains 50% K₂O. It could be

A mixture of NaCl+ KCl

Potassium chloride

None of these

Potassium sulphate

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Which one of the following is used as a nitrogenous fertiliser, as a weed killer in the onion fields and for correcting acidic soils?

CAN

Calcium cyanamide

Urea

Ammonium sulphate

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following fertilisers contains the least percentage of nitrogen?

Ammonium sulphate

Urea

Ammonium phosphate

Liquid ammonia

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The main constituent of rock phosphate is

None of these

Mono-calcium phosphate

Fluorspar

Di-calcium phosphate

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Nitrogenous fertiliser is required

None of these

During the early stage of growth to promote development of stem and leaves

To lessen the effect of excessive potash application

For accelerating fruit formation in later stage of growth

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Effectiveness of a fertiliser is independent of the

PH of soil

Nature of soil

Type of crop

None of these

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Which of the following nitrogenous fertilisers has the highest percentage of nitrogen?

Urea

Calcium ammonium nitrate (CAN)

Ammonium sulphate

Calcium nitrate

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YOUR ANSWER : ?