Fertiliser Technology problems
- 1. Which fertiliser is made (using coke oven gas) in by products plant of an integrated steel plant?
Options- A. Urea
- B. CAN
- C. Ammonium sulphate
- D. Superphosphate Discuss
Correct Answer: Ammonium sulphate
- 2. Naphtha in a fertiliser plant is used as a source of
Options- A. fuel
- B. H2
- C. N2
- D. O2 Discuss
Correct Answer: H2
- 3. Triple superphosphate is chemically represented as
Options- A. CaF2.3Ca3(PO4)2
- B. 3Ca3(PO4)2
- C. Ca(PO3)2
- D. Ca(H2PO4)2 Discuss
Correct Answer: CaF2.3Ca3(PO4)2
- 4. Phosphatic fertilisers
Options- A. are useful during early stage of the plant growth.
- B. accelerate fruit formation in later stages of growth.
- C. lessen the effect of excessive nitrogen application.
- D. none of these Discuss
Correct Answer: accelerate fruit formation in later stages of growth.
- 5. Catalyst used in steam reforming of naphtha is
Options- A. nickel
- B. platinum
- C. silica gel
- D. rhodium Discuss
Correct Answer: nickel
- 6. Ammonium nitrate (is mixed with limestone) is not used as fertiliser as such, because
Options- A. it is hygroscopic and explosive in nature.
- B. it is highly acidic in nature.
- C. it is a liquid at room temperature.
- D. its nitrogen content is very less. Discuss
Correct Answer: it is hygroscopic and explosive in nature.
- 7. Ammonium phosphate is a __________ fertiliser.
Options- A. nitrogenous
- B. phosphatic
- C. complex
- D. mixed Discuss
Correct Answer: mixed
- 8. NPK fertiliser is a __________ fertiliser.
Options- A. complex
- B. mixed
- C. nitrogenous
- D. phosphatic Discuss
Correct Answer: mixed
- 9. Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of __________ this is normally not done.
Options- A. increased biuret formation
- B. high corrosion rate
- C. increased cost of equipment
- D. all (a), (b) & (c) Discuss
Correct Answer: all (a), (b) & (c)
- 10. Sodium tri poly phosphate (STPP) is chemically represented as
Options- A. Na5P3O10
- B. Na4P3O8
- C. Na3P4O6
- D. Na2PO4 Discuss
Correct Answer: Na5P3O10
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