Which of the following fertilisers is required for the development of fibrous materials of the plants and of the sugar of vegetable & fruits ?
(A) Nitrogenous fertilisers
(B) Phosphatic fertilisers
(C) Potassic fertiliser
(D) None of these
Prilling tower is found in the flowsheet for the manufacture of__________________?
(A) Ammonia
(B) Urea
(C) Superphosphate
(D) Triple superphosphate
Heating of ortho-phosphoric acid to about 900°C, produces_________________?
(A) Meta-phosphoric acid
(B) Pyrophosphoric acid
(C) No change in it
(D) None of these
Ammonium nitrate (a fertiliser) is coated with limestone powder to ____________________?
(A) Increase its nitrogen content
(B) Cut down its production cost
(C) Avoid the risk of explosion
(D) Add extra nutrient as fertiliser
Main component of bone ash is _________________?
(A) Calcium sulphate
(B) Calcium phosphate
(C) Calcium carbonate
(D) Sodium phosphate
Which of the following solvents is used for the extraction of H3PO4 from CaCl2 solution during manufacture of ortho-phosphoric acid by wet process employing hydrochloric acid leaching ?
(A) Isopropyl alcohol
(B) Butyl alcohol
(C) Toluene
(D) Hexane
Reaction of calcium Fluorapatite with sulphuric acid produces ___________________?
(A) Ortho-phosphoric acid
(B) Simple superphosphate
(C) Triple superphosphate
(D) Red phosphorous
Low grade coal is ______________ to produce ammonia synthesis gas?
(A) Hydrogenated
(B) Liquefied
(C) Gasified
(D) Dehydrogenated
Main constituent of phosphate rock is_____________________?
(A) Ammonium phosphate
(B) Flour apatite
(C) Calcium fluoride
(D) Calcium phosphate
Gas based fertiliser plants use_________________?
(A) Natural gas as a source of hydrogen
(B) Natural gas as heating medium
(C) Coal gas as a source of hydrogen
(D) Coal gas as heating medium