Q. Phosphorus vapour comprises of

View solution

Q. Conversion of yellow phosphorous to red phosphorous is done by heating it in covered retorts at __________ °C in absence of air.

View solution

Q. Commercial fertilisers are available mostly in the form of

View solution

Q. Pick out the wrong statement.

View solution

Q. Ammonia synthesis gas is produced from natural gas by

View solution

Q. P₂O₅ content in triple superphosphate is about __________ percent.

View solution

Q. H₃PO₄ is the chemical formula of __________ phosphoric acid.

View solution

Q. Heating of orthophosphoric acid to 250°C produces

View solution

Q. Vapor phase reaction of ammonia & nitric acid to produce ammonium nitrate is termed as the __________ process.

View solution

Q. 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.

View solution

Q. The concentration (weight %) of nitric acid produced by the oxidation of ammonia and absorption of nitrogen oxides with water is about __________ percent.

View solution

Q. Urea is a __________ fertiliser.

View solution

Q. Calcium ammonium nitrate (CAN) is

View solution

Q. CO₂ present in reformed gas (obtained by steam reforming of naphtha) is removed by absorbing in

View solution

Q. Which is the most suitable fertiliser for paddy ?

View solution

Q. During conversion of ammonium carbamate into urea, presence of large excess of water

View solution

Q. Hydrogen content of coke oven gas is __________ percent.

View solution

Q. Pick out the wrong statement.

View solution

Q. Ammonium nitrate (a fertiliser) is coated with limestone powder to

View solution

Q. Action of phosphoric acid on rock phosphate produces

View solution