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

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Q. NPK means a __________ fertiliser.

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Q. Potassic fertilisers

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Q. The main constituent of rock phosphate is

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Q. Out of the following, N₂ content is minimum in

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

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Q. Nitrolime is

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Q. Fauser Monte Catini converter is used for

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Q. During nitric acid manufacture, catalytic oxidation of ammonia at 800°C in presence of platinum catalyst produces nitrogen oxide. Conversion of NH₃ to NO is about __________ percent.

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Q. Phosphatic fertiliser is graded based on its __________ content.

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Q. Which of the following is not a measure component necessarily to be present in fertilisers?

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Q. Nitric acid is produced on commercial scale in a fertiliser plant by

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Q. Pick out the wrong statement.

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Q. P₂O₅ content in superphosphate is about __________ percent.

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Q. Neutralisation of nitric acid with ammonia to produce ammonium nitrate is a/an __________ reaction.

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Q. Temperature and pressure in urea autoclave is

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Q. The most suitable fertiliser for accelerating seeding or fruit formation in later stages of plant growth is __________ fertiliser.

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Q. Ammonium nitrate is

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Q. Urea is a better fertilizer than ammonium sulphate, because

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Q. Reaction of cresylic acid with __________ produces tricresyl phosphate.

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