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Chemical Engineering :: Fertiliser Technology

Fertiliser Technology - Section 1
Fertiliser Technology - Section 2
Fertiliser Technology - Section 3
Fertiliser Technology - Section 4
Fertiliser Technology - Section 5
Fertiliser Technology - Section-6

  1. Urea (a nitrogeneous fertiliser) is produced from carbon dioxide and

    2. A.
    nitric acid
    B.
    ammonia
    C.
    ammonium nitrate
    D.
    nitric oxide

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

    3. A.
    Urea
    B.
    Calcium ammonium nitrate
    C.
    Superphosphate
    D.
    Ammonium sulphate

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  3. Biuret formation in urea is kept at minimum (< 1 %), because it is

    4. A.
    corrosive in nature.
    B.
    toxic and harmful to some crops.
    C.
    helpful in decomposition of urea.
    D.
    explosive in nature.

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  4. Catalyst used in desulphurisation of naphtha is

    5. A.
    Co-Mo
    B.
    Pt-Rh
    C.
    silica gel
    D.
    nickel

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  5. Pick out the correct statement.

    6. 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).

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  6. A phosphatic fertiliser contains 16% P2O5. It could be

    7. A.
    dicalcium phosphate
    B.
    superphosphate
    C.
    triple superphosphate
    D.
    none of these

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  7. __________ is not a fertiliser.

    8. A.
    Calcium ammonium nitrate
    B.
    Ferrous sulphate
    C.
    Liquid ammonia
    D.
    Ammonium sulphate

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  8. __________ is the undesirable by-product produced in the manufacture of urea.

    9. A.
    Ammonium carbonate
    B.
    Biuret
    C.
    Carbon dioxide
    D.
    Ammonium carbamate

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

    10. A.
    250-300
    B.
    500-750
    C.
    950-1050
    D.
    1400-1450

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  10. Which is the best fertiliser for paddy ?

    11. A.
    Ammonium sulphate
    B.
    Nitro-phosphate
    C.
    Superphosphate
    D.
    Potassium nitrate

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