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Chemical Engineering :: Fertiliser Technology

  1. Ammonia synthesis gas is produced from fuel oil by

  2. A.

     Steam reforming

    B.

     Hydrocracking

    C.

     Partial oxidation

    D.

     Hydrogenation

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  3. Fusion zone in the electric furnace used for reduction of phosphate rock to elemental phosphorous is maintained at __________ °C.

  4. A.

     250-300

    B.

     500-750

    C.

     950-1050

    D.

     1400-1450

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  5. Ammonia synthesis gas is produced from natural gas by

  6. A.

     Thermal cracking

    B.

     Steam reforming

    C.

     Partial oxidation

    D.

     Hydrogenation

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  7. Nitric acid is produced on commercial scale in a fertiliser plant by

  8. A.

     Oxidation of ammonia

    B.

     CaNO₃ + H₂SO₄ reaction

    C.

     Passing air through high voltage electric arc

    D.

     None of these

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  9. Potassic fertiliser is graded based on its __________ content.

  10. A.

     KCl

    B.

     K₂O

    C.

     KNO₃

    D.

     K₂SO₄

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  11. Phosphatic fertiliser is graded based on its __________ content.

  12. A.

     P₂O₃

    B.

     PCl5

    C.

     P₂O₅

    D.

     H₃PO₄

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  13. During conversion of ammonium carbamate into urea, presence of large excess of water

  14. A.

     Increases the yield of urea

    B.

     Adversely affects the yield of urea

    C.

     Reduces the evaporator load by diluting the urea solution

    D.

     Does not affect the yield of urea

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  15. Which of the following fertilisers is used as a cattle feed?

  16. A.

     Urea

    B.

     Calcium ammonium nitrate

    C.

     Superphosphate

    D.

     Ammonium sulphate

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  17. Rock phosphate used for the production of phosphatic fertiliser is mined at

  18. A.

     Amjhor (Jharkhand)

    B.

     Talchar (Orissa)

    C.

     Bailladella (M.P.)

    D.

     Kiriburu (Bihar)

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  19. Heating of orthophosphoric acid to 250°C produces

  20. A.

     Metaphosphoric acid

    B.

     Pyrophosphoric acid

    C.

     No change in it

    D.

     None of these

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