Fertiliser Technology problems
- 1. 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
Correct Answer: Calcium ammonium nitrate (CAN)
- 2. 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
Correct Answer: HNO3 & limestone
- 3. Optimum reaction temperature in steam reforming of naphtha is __________ °C.
Options- A. 700 - 1000
- B. 300 - 450
- C. 1500-1700
- D. 100-200 Discuss
Correct Answer: 700 - 1000
- 4. 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
Correct Answer: With increase in NH3/CO2 ratio, urea yield decreases for a given temperature, pressure and total feed rate.
- 5. 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
Correct Answer: Amjhor (Jharkhand)
- 6. A nitrogenous fertiliser contains 20% N2. It could be
Options- A. ammonium nitrate.
- B. calcium ammonium nitrate (CAN).
- C. urea.
- D. ammonium chloride. Discuss
Correct Answer: calcium ammonium nitrate (CAN).
- 7. Conversion achieved in HNO3 synthesis with the use of platinum catalyst is about 95-97%. The rate of formation of nitrogen dioxide from the oxidation of nitric acid is favoured by
Options- A. decreasing the pressure.
- B. decreasing the temperature.
- C. increasing the temperature.
- D. none of these. Discuss
Correct Answer: increasing the temperature.
- 8. Formation of ammonium carbamate by reaction of NH3 with CO2 is a/an __________ reaction.
Options- A. catalytic
- B. exothermic
- C. endothermic
- D. reversible Discuss
Correct Answer: exothermic
- 9. Which of the following is a natural inorganic fertiliser?
Options- A. Chile salt petre
- B. Oilcake
- C. Gobar mannure
- D. None of these Discuss
Correct Answer: Chile salt petre
- 10. Reaction of orthophosphoric acid with phosphate rock produces
Options- A. superphosphate
- B. triple superphosphate
- C. metaphosphoric acid
- D. monoammonium phosphate Discuss
Correct Answer: triple superphosphate
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