Page No. 39
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Which of the following nitrogenous fertilisers has the highest percentage of nitrogen ?
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Superphosphate is manufactured by reacting phosphate rock with_____________________?
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In an ammonia plant, the purge off is essential to___________________?
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Ammonia synthesis gas is produced from natural gas by___________________?
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Chemical formula of biuret is_________________?
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Heating of ortho-phosphoric acid to 250°C produces___________________?
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Potassic fertilisers do not promote the development of ______________________?
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Nitrogen content in ammonium sulphate (a fertiliser) is around ______________ percent?
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Dehydration of ammonium carbamate to yield urea is a/an __________________ reaction?
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