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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Q. Temperature and pressure in ammonia converter is

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Q. pH value of soil is maintained at __________ by the addition of fertiliser for optimum growth and health of the plant.

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Q. Yield of elemental phosphorous from rock phosphate is about __________ percent.

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Q. Conversion achieved in HNO₃ synthesis with the use of platinum catalyst is about 95-97%. The rate of formation of nitrogen dioxide from the oxidation of nitric acid is favoured by

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Q. Liquid ammonia and 60% nitric acid reaction (which produces ammonium nitrate) is

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