Liquid ammonia
Urea
Ammonium phosphate
Ammonium sulphate
✅ The correct answer is option C.
Engineering
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3842. Reaction of cresylic acid with __________ produces tricresyl phosphate.
Phosphorous pentoxide
Phosphorous oxychloride
Ammonium phosphate
Calcium phosphate
✅ The correct answer is option B.
3843. Reaction of anhydrous liquid ammonia with orthophosphoric acid produces
Ammonium phosphate
Superphosphate
Triple superphosphate
None of these
✅ The correct answer is option A.
3844. Fauser Monte Catini converter is used for
Ammonia synthesis (e.g. at FCI Sindri)
Methanation of CO and CO₂
Shift conversion (i.e. CO to CO₂)
None of these
✅ The correct answer is option A.
3845. Nitrogen content in ammonium sulphate (a fertiliser) is around __________ percent.
5
20
50
65
✅ The correct answer is option B.
3846. Sodium tri poly phosphate (STPP) is chemically represented as
Na₅P3O₁₀
Na₄P3O₈
Na₃P4O₆
Na₂PO₄
✅ The correct answer is option A.
3847. Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of __________ this is normally not done.
Increased biuret formation
High corrosion rate
Increased cost of equipment
All of the above
✅ The correct answer is option D.
3848. Triple superphosphate is made by reacting phosphate rock with __________ acid.
Phosphoric
Nitric
Sulphuric
Hydrochloric
✅ The correct answer is option A.
3849. Iron is not used alone as a catalyst in ammonia synthesis, because
Its activity declines rapidly, if heated to above 520°C
It decomposes ammonia
It gets oxidised above 500°C
None of these
✅ The correct answer is option A.
3850. Which of the following is the costliest source of hydrogen needed for ammonia manufacture under Indian condition?
Electrolysis of water
Cryogenic removal of H₂ from coke oven gas
Steam reforming of naphtha
Natural gas cracking
✅ The correct answer is option A.