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  • Question

  • Nitrogenous fertiliser is required


  • Options
  • A. during the early stage of growth to promote development of stem and leaves.
  • B. for accelerating fruit formation in later stage of growth.
  • C. to lessen the effect of excessive potash application.
  • D. none of these.

  • Correct Answer
  • during the early stage of growth to promote development of stem and leaves. 

    • Fertiliser Technology problems

    Search Results

    • 1. Ammonium sulphate can be produced by reacting gypsum with

    • Options
    • A. ammonia
    • B. ammonium carbonate
    • C. nitric acid
    • D. none of these
      • Discuss
    • 2. Catalyst used in Haber's process for ammonia production is

    • Options
    • A. reduced iron oxide
    • B. nickel
    • C. vanadium pentoxide
    • D. silica gel
      • Discuss
    • 3. (CH3 C6 H4)3 PO4 is the chemical formula of

    • Options
    • A. triple superphosphate
    • B. tricresyl phosphate
    • C. flourapatite
    • D. superphosphate
      • Discuss
    • 4. Which is a catalyst promoter used in catalytic ammonia synthesis reaction?

    • Options
    • A. Al2O3
    • B. Cr2O3
    • C. K2O
    • D. MnO
      • Discuss
    • 5. P2O5 content in triple superphosphate is about __________ percent.

    • Options
    • A. 42-50
    • B. 15-20
    • C. 85-90
    • D. 70-75
      • Discuss
    • 6. The concentration (weight %) of nitric acid produced by the oxidation of ammonia and absorption of nitrogen oxides with water is about __________ percent.

    • Options
    • A. 60
    • B. 30
    • C. 95
    • D. 100
      • Discuss
    • 7. Prilling tower is found in the flowsheet for the manufacture of

    • Options
    • A. ammonia
    • B. urea
    • C. superphosphate
    • D. triple superphosphate
      • Discuss
    • 8. Phosphoric acid is produced in wet process from phosphate rock and

    • Options
    • A. dilute H2SO4
    • B. concentrated H2SO4
    • C. concentrated NHO3
    • D. concentrated HCl
      • Discuss
    • 9. Urea is represented as

    • Options
    • A. NH2.CO.NH2
    • B. NH3CO.CH3
    • C. NH.CO2.NH
    • D. NH3.CO2.NH3
      • Discuss
    • 10. Reaction of orthophosphoric acid with soda ash produces

    • Options
    • A. sodium tripolyphosphate (STPP)
    • B. tricresyl phosphate
    • C. tributyl phosphate
    • D. nitrophosphate
      • Discuss

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