EXAMIANS
Conversion of yellow phosphorous to red phosphorous is done by heating it in covered retorts at __________ °C in absence of air.
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Which of the following does not come under the category of 'secondary nutrient' for plant growth?
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In __________ converter for ammonia synthesis, the catalyst is arranged in the form of a single continuous bed.
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Main constituent of phosphate rock is
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Yield of elemental phosphorous from rock phosphate is about __________ percent.
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Which one of the following is used as a nitrogenous fertiliser, as a weed killer in the onion fields and for correcting acidic soils?
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Dehydration of ammonium carbamate produces
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5-10-5 fertilisers mean that they contain
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Heating of orthophosphoric acid to about 900°C, produces
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In the manufacture of H₃ PO₄ (ortho), ; strong H₂ SO₄ leaching wet process as compared to electric furnace process
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