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- Question
Reaction of calcium fluorapatite with sulphuric acid produces
Options- A. ortho-phosphoric acid.
- B. simple superphosphate.
- C. triple superphosphate.
- D. red phosphorous.
- Correct Answer
- simple superphosphate.
- 1. Which of the following gasifiers can be attached to coal based fertiliser plants?
Options- A. Lurgi (high pressure) gasifier.
- B. Kopper-Totzek gasifier.
- C. Gasifier working at 20 atm.
- D. Gasifier working at 40 atm. Discuss
- 2. Commercial production of hydrogen for the manufacture of nitrogeneous fertilisers is done by
Options- 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 (a), (b) and (c) Discuss
- 3. Heating of orthophosphoric acid to about 900°C, produces
Options- A. metaphosphoric acid
- B. pyrophosphoric acid
- C. no change in it
- D. none of these Discuss
- 4. Catalyst used in ammonia synthesis uses __________ as a promoter.
Options- A. Pt
- B. K2O
- C. Al2O3
- D. Ni Discuss
- 5. Coal based fertiliser plants at Ramagundam (Andhra Pradesh) and Talchar (Orissa)
Options- A. use coal for heating purpose.
- B. gasify coal to get hydrogen from coal gas.
- C. use coal as filler in fertiliser.
- D. use coal as conditioner in fertiliser. Discuss
- 6. Which of the following is not a mixed fertiliser?
Options- A. Nitrophosphate
- B. Calcium ammonium nitrate (CAN)
- C. Ammonium phosphate
- D. None of these Discuss
- 7. Raw materials required for the production of CAN (Calcium ammonium nitrate) is NH3
Options- A. HNO3 & limestone
- B. CO2 & H2SO4
- C. HNO3 & NH4Cl
- D. CO2 & KNO3 Discuss
- 8. Optimum reaction temperature in steam reforming of naphtha is __________ °C.
Options- A. 700 - 1000
- B. 300 - 450
- C. 1500-1700
- D. 100-200 Discuss
- 9. Pick out the correct statement.
Options- A. Reaction of NH3 with HNO3 to produce (NH4)2NO3 is endothermic.
- B. With increase in NH3/CO2 ratio, urea yield decreases for a given temperature, pressure and total feed rate.
- C. Biuret (an intermediate during urea manufacture) is toxic to seeds and animals.
- D. both (b) and (c). Discuss
- 10. Rock phosphate used for the production of phosphatic fertiliser is mined at
Options- A. Amjhor (Jharkhand)
- B. Talchar (Orissa)
- C. Bailladella (M.P.)
- D. Kiriburu (Bihar) Discuss
Fertiliser Technology problems
Search Results
Correct Answer: Kopper-Totzek gasifier.
Correct Answer: all (a), (b) and (c)
Correct Answer: metaphosphoric acid
Correct Answer: K2O
Correct Answer: gasify coal to get hydrogen from coal gas.
Correct Answer: Calcium ammonium nitrate (CAN)
Correct Answer: HNO3 & limestone
Correct Answer: 700 - 1000
Correct Answer: With increase in NH3/CO2 ratio, urea yield decreases for a given temperature, pressure and total feed rate.
Correct Answer: Amjhor (Jharkhand)
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