51. A phosphatic fertiliser contains 16% P2O5. It could be
52. 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
53. Catalytic ammonia synthesis reaction as in Haber's process is
54. In ammonia synthesis (N2 + 3H2 = 2NH3), there is a decrease in total volume, hence to get high equilibrium conversion, the reaction should be carried out at
55. Which of the following is the costliest source of hydrogen needed for ammonia manufacture under Indian condition?
56. Promoter used in NH3 synthesis catalyst is
57. Triple superphosphate which contains about 46% P2O5 is produced by the reaction of phosphate rock with ortho phosphoric acid of ____ percent concentration.
58. Reaction of dilute sulphuric acid with phosphate rock produces
59. Reaction of orthophosphoric acid with phosphate rock produces
60. Reaction of nitric acid and sulphuric acid with phosphate rock produces
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