Q. Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of __________ this is normally not done.

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Q. Which of the following gasifiers can be attached to coal based fertiliser plants ?

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Q. NPK fertiliser is a __________ fertiliser.

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Q. Reaction of calcium fluorapatite with sulphuric acid produces

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Q. Which of the following is not a commercially used feed-stock for the production of ammonia synthesis gas?

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Q. Fertiliser value of a nitrogeneous fertiliser is expressed in terms of its __________ content.

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Q. Triple superphosphate is made by reacting phosphate rock with __________ acid.

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Q. C/H ratio (by weight) of naphtha used in nitrogenous fertiliser making is about

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Q. Raw materials for urea production are

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Q. Which of the following is not a mixed fertiliser ?

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Q. Chemical formula of metaphosphoric acid is

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Q. Low grade coal is __________ to produce ammonia synthesis gas.

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Q. Which of the following does not come under the category of 'primary nutrient' for plant growth?

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Q. Effectiveness of a fertiliser is independent of the

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Q. Which nutrient in fertiliser makes the plant stems stronger and increases branching ?

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Q. Optimum reaction temperature in steam reforming of naphtha is __________ °C.

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Q. Which of the following is a natural inorganic fertiliser ?

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Q. Oxidation of ammonia is

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Q. Reaction of orthophosphoric acid with phosphate rock produces

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Q. Flushing liquor used for cooling coke oven gas constitutes of

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