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  • Question
  • Nitrogen content in ammonium sulphate (a fertiliser) is around __________ percent.


  • Options
  • A. 5
  • B. 20
  • C. 50
  • D. 65

  • Correct Answer
  • 20 


  • Fertiliser Technology problems


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    • 1. In __________ converter for ammonia synthesis, the catalyst is arranged in the form of a single continuous bed.

    • Options
    • A. Fauser-Monte Catini
    • B. Claude
    • C. Udhe
    • D. Kellog
    • Discuss
    • 2. Sodium tri poly phosphate (STPP) is chemically represented as

    • Options
    • A. Na5P3O10
    • B. Na4P3O8
    • C. Na3P4O6
    • D. Na2PO4
    • Discuss
    • 3. Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of __________ this is normally not done.

    • Options
    • A. increased biuret formation
    • B. high corrosion rate
    • C. increased cost of equipment
    • D. all (a), (b) & (c)
    • Discuss
    • 4. NPK fertiliser is a __________ fertiliser.

    • Options
    • A. complex
    • B. mixed
    • C. nitrogenous
    • D. phosphatic
    • Discuss
    • 5. Ammonium phosphate is a __________ fertiliser.

    • Options
    • A. nitrogenous
    • B. phosphatic
    • C. complex
    • D. mixed
    • Discuss
    • 6. Potassic fertilisers do not promote the development of

    • Options
    • A. stems & leaves during early stage of plant growth.
    • B. starches of potatoes & grains.
    • C. sugar of fruits & vegetables.
    • D. fibrous materials of plants.
    • Discuss
    • 7. Which of the following is not a commercially used feed-stock for the production of ammonia synthesis gas?

    • Options
    • A. Water
    • B. Naphtha
    • C. Tar
    • D. Coal/coke oven gas
    • Discuss
    • 8. In ammonia synthesis (N2 + 3H2 = 2NH3), there is a decrease in total volume, hence to get high equilibrium conversion, the reaction should be carried out at

    • Options
    • A. low pressure.
    • B. high pressure.
    • C. very high temperature.
    • D. atmospheric pressure; as the pressure has no effect on conversion.
    • Discuss
    • 9. Reaction of anhydrous liquid ammonia with orthophosphoric acid produces

    • Options
    • A. ammonium phosphate
    • B. superphosphate
    • C. triple superphosphate
    • D. none of these
    • Discuss
    • 10. The essential ingradient of all the synthesis gas is

    • Options
    • A. H2
    • B. O2
    • C. CO2
    • D. N2
    • Discuss


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