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  • Question

  • 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.

  • Correct Answer
  • increasing the temperature. 

    • Fertiliser Technology problems

    Search Results

    • 1. A nitrogenous fertiliser contains 20% N2. It could be

    • Options
    • A. ammonium nitrate.
    • B. calcium ammonium nitrate (CAN).
    • C. urea.
    • D. ammonium chloride.
      • Discuss
    • 2. 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
    • 3. 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
    • 4. Optimum reaction temperature in steam reforming of naphtha is __________ °C.

    • Options
    • A. 700 - 1000
    • B. 300 - 450
    • C. 1500-1700
    • D. 100-200
      • Discuss
    • 5. 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
    • 6. Formation of ammonium carbamate by reaction of NH3 with CO2 is a/an __________ reaction.

    • Options
    • A. catalytic
    • B. exothermic
    • C. endothermic
    • D. reversible
      • Discuss
    • 7. Which of the following is a natural inorganic fertiliser?

    • Options
    • A. Chile salt petre
    • B. Oilcake
    • C. Gobar mannure
    • D. None of these
      • Discuss
    • 8. Reaction of orthophosphoric acid with phosphate rock produces

    • Options
    • A. superphosphate
    • B. triple superphosphate
    • C. metaphosphoric acid
    • D. monoammonium phosphate
      • Discuss
    • 9. 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
    • 10. Yield of elemental phosphorous from rock phosphate is about __________ percent.

    • Options
    • A. 1-2
    • B. 15-25
    • C. 40-45
    • D. 60-65
      • Discuss

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