Discussion
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- Question
Yield of elemental phosphorous from rock phosphate is about __________ percent.
Options- A. 1-2
- B. 15-25
- C. 40-45
- D. 60-65
- Correct Answer
- 15-25
- 1. pH value of soil is maintained at __________ by the addition of fertiliser for optimum growth and health of the plant.
Options- A. 4-5
- B. 7-8
- C. 9-10
- D. 12-13 Discuss
- 2. Reaction of orthophosphoric acid with phosphate rock produces
Options- A. superphosphate
- B. triple superphosphate
- C. metaphosphoric acid
- D. monoammonium phosphate Discuss
- 3. Which of the following is a natural inorganic fertiliser?
Options- A. Chile salt petre
- B. Oilcake
- C. Gobar mannure
- D. None of these Discuss
- 4. Formation of ammonium carbamate by reaction of NH3 with CO2 is a/an __________ reaction.
Options- A. catalytic
- B. exothermic
- C. endothermic
- D. reversible Discuss
- 5. 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
- 6. A phosphatic fertiliser contains 16% P2O5. It could be
Options- A. dicalcium phosphate
- B. superphosphate
- C. triple superphosphate
- D. none of these Discuss
- 7. CaH4(PO4)2 is the chemical formula of
Options- A. superphosphate
- B. triple superphosphate
- C. calcium phosphate
- D. meta phosphoric acid Discuss
- 8. Which of the following is the costliest source of hydrogen needed for ammonia manufacture under Indian condition?
Options- A. Electrolysis of water.
- B. Cryogenic removal of H2 from coke oven gas.
- C. Steam reforming of naphtha.
- D. Natural gas cracking. Discuss
- 9. Flushing liquor used for cooling coke oven gas constitutes of
Options- A. ammoniacal liquor
- B. K2CO3 solution
- C. dilute H2SO4
- D. dilute HCl Discuss
- 10. Liquid ammonia and 60% nitric acid reaction (which produces ammonium nitrate) is
Options- A. exothermic
- B. endothermic
- C. autocatalytic
- D. none of these Discuss
Fertiliser Technology problems
Search Results
Correct Answer: 7-8
Correct Answer: triple superphosphate
Correct Answer: Chile salt petre
Correct Answer: exothermic
Correct Answer: increasing the temperature.
Correct Answer: superphosphate
Correct Answer: triple superphosphate
Correct Answer: Electrolysis of water.
Correct Answer: ammoniacal liquor
Correct Answer: exothermic
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