Red phosphorous is changed into white phosphorous by
Catalyst used in Haber's process for ammonia production is
CO2 present in reformed gas (obtained by steam reforming of naphtha) is removed by absorbing in
Ammonium nitrate (a fertiliser) is coated with limestone powder to
Action of phosphoric acid on rock phosphate produces
Conversion of yellow phosphorous to red phosphorous is done by heating it in covered retorts at __________ °C in absence of air.
Commercial fertilisers are available mostly in the form of
Vapor phase reaction of ammonia & nitric acid to produce ammonium nitrate is termed as the __________ process.
Steam reforming of naphtha is a source of hydrogen production for nitrogeneous fertiliser industry. What is the usual ratio of steam to carbon maintained in the process of steam reforming of naphtha ?
Urea is formed only
Base suspension fertiliser essentially contains
Superphosphate is manufactured by reacting phosphate rock with
Urea is represented as
Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium
Which is the most suitable fertiliser for paddy ?
Pick out the wrong statement.
Use of catalyst is a must in the ammonia manufacture, because the reaction is reversible as well as the heat of dissociation of N2 & H2 is high. The presence of promoter along with the catalyst helps in __________ of the catalyst.
(CH3 C6 H4)3 PO4 is the chemical formula of
Dehydration of ammonium carbamate (to produce urea) is a/an __________ reaction.
Conditioners like finely divided peat are added to the fertiliser to
Vetrocoke solution is
In calcium ammonium nitrate (CAN) fertil-ser
Two gas based fertiliser plants are located in
Ammonia synthesis gas is produced from natural gas by
Which is a catalyst promoter used in catalytic ammonia synthesis reaction ?
Electric process as compared to wet process (for the manufacture of phosphoric acid)
Liquid ammonia is not used as such a fertiliser in tropical countries like India, because
Fertiliser plants get their N2 requirements
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