Triple superphosphate is made by reacting phosphate rock with __________ acid.
Ammonia synthesis reaction is
Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of __________ this is normally not done.
Maximum nitrogen percentage is in
__________ is the most suitable fertiliser for paddy.
Raw materials for urea production are
__________ is not a fertiliser.
__________ is the undesirable by-product produced in the manufacture of urea.
Which of the following is the costliest source of hydrogen needed for ammonia manufacture under Indian condition ?
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
Sodium tri poly phosphate (STPP) is chemically represented as
Urea (a nitrogeneous fertiliser) is produced from carbon dioxide and
H4P2O7 is the chemical formula of __________ phosphoric acid.
Ammonium nitrate (is mixed with limestone) is not used as fertiliser as such, because
Leaching of phosphate rock by strong __________ acid produces phosphoric acid.
Which fertiliser is made (using coke oven gas) in by products plant of an integrated steel plant ?
Ammonium phosphate is a __________ fertiliser.
Which of the following gasifiers can be attached to coal based fertiliser plants ?
Nitrogen content in ammonium sulphate (a fertiliser) is around __________ percent.
Which of the following is not a mixed fertiliser ?
Chemical formula of metaphosphoric acid is
Which of the following does not come under the category of'primary nutrient' for plant growth?
Oxidation of ammonia is
Though liquid ammonia itself is a fertiliser (withnitrogen content) yet it is commonly not used as such in a tropical country like India, because it
A nitrogenous fertiliser containsN2. It could be
Fusion zone in the electric furnace used for reduction of phosphate rock to elemental phosphorous is maintained at __________ °C.
Formation of ammonium carbamate by reaction of NH3 with CO2 is a/an __________ reaction.
Heating a mixture of phosphate rock, coke and sand in an electric furnace produces
Liquid ammonia andnitric acid reaction (which produces ammonium nitrate) is
A fertiliser containsN2. It could be
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