FERTILISER TECHNOLOGY QUIZ

Tricresyl phosphate is chemically represented as

(NH₄)₂HPO₄

Ca₁₀(PO₄)3F₆

(CH₃ C₆ H₄)₃ PO₄

NH₄H₂PO₄

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Dehydration of ammonium carbamate (to produce urea) is a/an __________ reaction.

Reversible

Catalytic

Endothermic

Exothermic

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Which of the following set of conditions is favourable for the maximum yield of ammonia by Haber's process?

High pressure, low reactants concentration, low temperature

Low pressure, high reactants concentration, low temperature

High pressure, low reactants concentration, high temperature

High pressure, high reactants concentration, low temperature

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Ammonia synthesis reaction is

Autocatalytic

Endothermic

Exothermic

None of these

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CaH₄(PO₄)₂ is the chemical formula of

Calcium phosphate

Triple superphosphate

Meta phosphoric acid

Superphosphate

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Nitrolime is

A mixture of nitric acid and lime

A mixture of ammonium nitrate and calcium nitrate

Calcium nitrate

Calcium ammonium nitrate

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Reaction of orthophosphoric acid with soda ash produces

Nitrophosphate

Sodium tripolyphosphate (STPP)

Tricresyl phosphate

Tributyl phosphate

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Biuret formation in urea is kept at minimum (< 1 %), because it is

Corrosive in nature

Explosive in nature

Helpful in decomposition of urea

Toxic and harmful to some crops

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

Ammonium sulphate

Ammonium phosphate

Liquid ammonia

Urea

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Rock phosphate constitutes mainly of

Mono-calcium phosphate

Fluorapatite

Di-ammonium phosphate

Di-calcium phosphate

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