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Fertiliser Technology problems

  • 1. Which of the following does not come under the category of 'micro-nutrient' for plant growth?

  • Options
  • A. Chlorine
  • B. Iron
  • C. Boron
  • D. Carbon
    • Discuss
  • 2. Reaction of cresylic acid with __________ produces tricresyl phosphate.

  • Options
  • A. phosphorous pentoxide
  • B. phosphorous oxychloride
  • C. ammonium phosphate
  • D. calcium phosphate
    • Discuss
  • 3. __________ is required more for leafy crops.

  • Options
  • A. Nitrogen
  • B. Phosphorous
  • C. Potassium
  • D. Carbon
    • Discuss
  • 4. Monte catini process is a widely used process for the manufacture of

  • Options
  • A. urea
  • B. calcium ammonium nitrate
  • C. triple superposphate
  • D. none of these
    • Discuss
  • 5. Pick out the wrong statement.

  • Options
  • A. Nitrogen is normally supplied in fertiliser either in ammoniacal or the nitrate form, from which the soil takes it up in the form of ammonium ions or nitrate ions and forms amino acids.
  • B. Calcium present in the fertiliser helps in correcting the soil acidity.
  • C. Particle size range of a good grannular fertiliser is 10-15 mesh and it contains less moisture as compared to finely divided powder form of fertiliser.
  • D. Ammonium nitrate fertiliser is obtained as a by-product in an integrated steel plant having by-product coke ovens.
    • Discuss
  • 6. NPK means a __________ fertiliser.

  • Options
  • A. mixed
  • B. potassic
  • C. liquid
  • D. solid
    • Discuss
  • 7. Ammonia synthesis gas is produced from fuel oil by

  • Options
  • A. steam reforming
  • B. hydrocracking
  • C. partial oxidation
  • D. hydrogenation
    • Discuss
  • 8. The composition of fresh feed to the high temperature, high pressure urea autoclave is

  • Options
  • A. excess liquid ammonia and liquefied CO2.
  • B. excess liquid ammonia and compressed CO2 gas.
  • C. liquid ammonia and excess compressed CO2.
  • D. compressed ammonia gas and excess compressed CO2.
    • Discuss
  • 9. P2O5 percentage in the phosphoric acid produced by wet process is about

  • Options
  • A. 10
  • B. 30
  • C. 50
  • D. 70
    • Discuss
  • 10. Hydrogen is recovered from coke oven gas on commercial scale (as practised in fertiliser plant at Rourkela) by

  • Options
  • A. adsorption on palladium.
  • B. cryogenic operations (low temperature cooling).
  • C. absorption (using ethanolamine or pyragalloll solution).
  • D. none of these.
    • Discuss

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