Fertiliser Technology problems
- 1. The most suitable fertiliser for accelerating seeding or fruit formation in later stages of plant growth is __________ fertiliser.
Options- A. nitrogenous
- B. phosphatic
- C. potassic
- D. none of these Discuss
Correct Answer: phosphatic
- 2. Triple superphosphate which contains about 46% P2O5 is produced by the reaction of phosphate rock with ortho phosphoric acid of____percent concentration.
Options- A. 25-28
- B. 52-54
- C. 75-80
- D. > 98 Discuss
Correct Answer: 52-54
- 3. Reaction of nitric acid and sulphuric acid with phosphate rock produces
Options- A. nitrophosphate
- B. diammonium phosphate
- C. tricresyl phosphate
- D. tributyl phosphate Discuss
Correct Answer: nitrophosphate
- 4. Neutralisation of nitric acid with ammonia to produce ammonium nitrate is a/an __________ reaction.
Options- A. catalytic
- B. endothermic
- C. exothermic
- D. autocatalytic Discuss
Correct Answer: exothermic
- 5. Fertiliser produced during soda ash manufacture by dual process is ammonium
Options- A. chloride
- B. sulphate
- C. nitrate
- D. none of these Discuss
Correct Answer: chloride
- 6. Fertilizer plant getting its hydrogen requirement partly from coke oven gas is situated at
Options- A. Rourkela (under SAIL)
- B. Barauni (under HFC)
- C. Nangal (under NFL)
- D. Talchar (under FCI) Discuss
Correct Answer: Rourkela (under SAIL)
- 7. Plant tranquillisers
Options- A. hold back stem growth and halt plants at a desired height.
- B. cause early maturation of plants.
- C. accelerate ripening of food and grain.
- D. produce seedless fruit. Discuss
Correct Answer: hold back stem growth and halt plants at a desired height.
- 8. During nitric acid manufacture, catalytic oxidation of ammonia at 800°C in presence of platinum catalyst produces nitrogen oxide. Conversion of NH3 to NO is about __________ percent.
Options- A. 38
- B. 68
- C. 82
- D. 98 Discuss
Correct Answer: 98
- 9. Nitrogen content of a nitrogenous fertiliser is 35%. It could be
Options- A. urea
- B. ammonium nitrate
- C. calcium ammonium nitrate (CAN)
- D. ammonium sulphate Discuss
Correct Answer: ammonium nitrate
- 10. Fauser Monte Catini converter is used for
Options- A. ammonia synthesis (e.g. at FCI Sindri).
- B. methanation of CO and CO2.
- C. shift conversion (i.e. CO to CO2).
- D. none of these. Discuss
Correct Answer: ammonia synthesis (e.g. at FCI Sindri).
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