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Chemical Engineering :: Fertiliser Technology

  1. Catalyst used in the manufacture of NH₃ by Haber's process is finely divided

  2. A.

     Nickel

    B.

     Iron

    C.

     Vanadium pentoxide

    D.

     Alumina

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  3. Base suspension fertiliser essentially contains

  4. A.

     13% N₂ and 43% P₂O₅

    B.

     43% N₂ and 13% P₂O₅

    C.

     43% N₂ and 13% K₂O

    D.

     43% K₂O and 43% P₂O₅

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  5. Temperature and pressure in ammonia converter is

  6. A.

     200 atm, 1000°C

    B.

     450 atm, 200°C

    C.

     450 atm, 550°C

    D.

     450 atm, 1000°C

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  7. Lower temperature and large excess of ammonia in urea melt

  8. A.

     Increases biuret formation

    B.

     Decreases biuret formation

    C.

     Is undersirable

    D.

     Does not effect biuret formation

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  9. Which of the following set of conditions is favourable for the maximum yield of ammonia by Haber's process?

  10. A.

     High pressure, low reactants concentration, high temperature

    B.

     High pressure, low reactants concentration, low temperature

    C.

     High pressure, high reactants concentration, low temperature

    D.

     Low pressure, high reactants concentration, low temperature

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  11. With increases in pressure, the conversion of ammonium carbamate into urea

  12. A.

     Increases

    B.

     Decreases

    C.

     Remains unaltered

    D.

     Can either increase or decrease depends on biuret content

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  13. Steam reforming of naphtha is a source of hydrogen production for nitrogeneous fertiliser industry. What is the usual ratio of steam to carbon maintained in the process of steam reforming of naphtha?

  14. A.

     1.5:1

    B.

     3.5:1

    C.

     10:1

    D.

     15:1

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  15. Nitrogen content of a nitrogenous fertiliser is 35%. It could be

  16. A.

     Urea

    B.

     Ammonium nitrate

    C.

     Calcium ammonium nitrate (CAN)

    D.

     Ammonium sulphate

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  17. Flushing liquor used for cooling coke oven gas constitutes of

  18. A.

     Ammoniacal liquor

    B.

     K₂CO₃ solution

    C.

     Dilute H₂SO₄

    D.

     Dilute HCl

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  19. Optimum reaction temperature in steam reforming of naphtha is __________ °C.

  20. A.

     700 - 1000

    B.

     300 - 450

    C.

     1500-1700

    D.

     100-200

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