Q.1
Ammonium nitrate (a fertiliser) is coated with limestone powder to
Q.2
Ammonium sulphate can be produced by reacting gypsum with
Q.3
P₂O₅ percentage in the phosphoric acid produced by wet process is about
Q.4
Urea (a nitrogeneous fertiliser) is produced from carbon dioxide and
Q.5
HPO₃ is the chemical formula of __________ phosphoric acid.
Q.6
Main constituent of phosphate rock is
Q.7
The main constituent of rock phosphate is
Q.8
The essential ingradient of all the synthesis gas is
Q.9
In the manufacture of urea, the intermediate chemical formed is
Q.10
During nitric acid manufacture, catalytic oxidation of ammonia at 800°C in presence of platinum catalyst produces nitrogen oxide. Conversion of NH₃ to NO is about __________ percent.
Q.11
Ammonium phosphate is a __________ fertiliser.
Q.12
Phosphatic fertiliser is graded based on its __________ content.
Q.13
Promoter used in NH₃ synthesis catalyst is
Q.14
Triple superphosphate which contains about 46% P₂O₅ is produced by the reaction of phosphate rock with ortho phosphoric acid of____percent concentration.
Q.15
Reaction of dilute sulphuric acid with phosphate rock produces
Q.16
Reaction of orthophosphoric acid with phosphate rock produces
Q.17
Reaction of nitric acid and sulphuric acid with phosphate rock produces
Q.18
Gas based fertiliser plants use
Q.19
Ammonium nitrate (is mixed with limestone) is not used as fertiliser as such, because
Q.20
Triple superphosphate is made by reacting phosphate rock with __________ acid.
Q.21
Catalyst used in desulphurisation of naphtha is
Q.22
Which of the following is the costliest method for commercial production of hydrogen for ammonia synthesis?
Q.23
A phosphatic fertiliser contains 16% P₂O₅. It could be
Q.24
Though liquid ammonia itself is a fertiliser (with 82% nitrogen content) yet it is commonly not used as such in a tropical country like India, because it
Q.25
Catalytic ammonia synthesis reaction as in Haber's process is
Q.26
Which is a catalyst promoter used in catalytic ammonia synthesis reaction?
Q.27
Though kinetics of ammonia synthesis dictates the use of low temperature for high equilibrium conversion, yet it is kept moderately high (550°C), because at low temperature
Q.28
Nitrogen content of calcium ammonium nitrate (CAN) is __________ percent.
Q.29
Fauser Monte Catini converter is used for
Q.30
Catalyst used in Haber's process for ammonia production is
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