- A. Steam reforming of naphtha and cracking of natural gas
- B. Electrolysis of water
- C. Cryogenic separation of hydrogen from coke oven gas
- D. All of the above
Fertiliser Technology
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Commercial production of hydrogen for the manufacture of nitrogeneous fertilisers is done by_____.
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Heating of orthophosphoric acid to about 900°C, produces_____.
- A. Metaphosphoric acid
- B. Pyrophosphoric acid
- C. No change in it
- D. None of these
-
Both white phosphorous as well as red phosphorous_____.
- A. Are soluble in CS₂
- B. Burns when heated in air
- C. Reacts with hot caustic soda solution to give phosphine
- D. All of the above
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CaH₄(PO₄)₂ is the chemical formula of_____.
- A. Superphosphate
- B. Triple superphosphate
- C. Calcium phosphate
- D. Meta phosphoric acid
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Catalyst used in Haber’s process for ammonia production is_____.
- A. Reduced iron oxide
- B. Nickel
- C. Vanadium pentoxide
- D. Silica gel
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C/H ratio (by weight) of naphtha used in nitrogenous fertiliser making is about_____.
- A. 2
- B. 6
- C. 13
- D. 20
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Promoter used in NH₃ synthesis catalyst is_____.
- A. K₂O
- B. SiO₃
- C. V₂O₅
- D. U₂O₃
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Which of the following fertilisers is needed for promoting the development of leaves and stems during early stages of plant growth?
- A. Nitrogeneous fertiliser
- B. Potassic fertiliser
- C. Phosphatic 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
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Reaction of cresylic acid with ______ produces tricresyl phosphate.
- A. Phosphorous pentoxide
- B. Phosphorous oxychloride
- C. Ammonium phosphate
- D. Calcium phosphate