Discussion
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- Question
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
Options- A. rate of reaction is very low.
- B. very high pressure is required resulting in costly pressure vessel.
- C. space velocity of gas is very low resulting in decreased conversion.
- D. none of these
- Correct Answer
- rate of reaction is very low.
- 1. Effectiveness of a fertiliser is independent of the
Options- A. nature of soil
- B. type of crop
- C. pH of soil
- D. none of these Discuss
- 2. Which of the following fertilisers contains the least percentage of nitrogen?
Options- A. Liquid ammonia
- B. Urea
- C. Ammonium phosphate
- D. Ammonium sulphate Discuss
- 3. __________ is not a fertiliser.
Options- A. Calcium ammonium nitrate
- B. Ferrous sulphate
- C. Liquid ammonia
- D. Ammonium sulphate Discuss
- 4. Heating a mixture of phosphate rock, coke and sand in an electric furnace produces
Options- A. phosphoric acid
- B. ammonium phosphate
- C. phosphorous
- D. superphosphate Discuss
- 5. Urea (a nitrogeneous fertiliser) is produced from carbon dioxide and
Options- A. nitric acid
- B. ammonia
- C. ammonium nitrate
- D. nitric oxide Discuss
- 6. P2O5 content in superphosphate is about __________ percent.
Options- A. 30-35
- B. 15-20
- C. 65-70
- D. 85-90 Discuss
- 7. Which of the following fertilisers is required for the development of fibrous materials of the plants and of the sugar of vegetable & fruits?
Options- A. Nitrogenous fertilisers
- B. Phosphatic fertilisers
- C. Potassic fertiliser
- D. None of these Discuss
- 8. In the manufacture of orthophosphoric acid by strong H2SO4 leaching wet process, keeping the reactor temperature above 100°C, results in the formation of undesriable
Options- A. CaSO4 .
H2O and CaSO4 crystals - B. pyrophosphoric acid
- C. metaphosphoric acid
- D. all (a), (b) and (c). Discuss
- 9. Out of the following, N2 content is minimum in
Options- A. urea
- B. ammonium nitrate
- C. ammonium sulphate
- D. ammonium chloride Discuss
- 10. In an ammonia plant, the purge off is essential to
Options- A. maintain inert gas concentration within a limit.
- B. remove excess poisonous gases.
- C. maintain H2 : N2 ratio at 3 :1.
- D. remove uncondensed ammonia vapour. Discuss
Fertiliser Technology problems
Search Results
Correct Answer: none of these
Correct Answer: Ammonium phosphate
Correct Answer: Ferrous sulphate
Correct Answer: phosphorous
Correct Answer: ammonia
Correct Answer: 15-20
Correct Answer: Potassic fertiliser
Correct Answer: CaSO4 .
H2O and CaSO4 crystals Correct Answer: ammonium sulphate
Correct Answer: maintain H2 : N2 ratio at 3 :1.
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