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Chemical Engineering :: Fertiliser Technology

  1. Which one of the following is used as a nitrogenous fertiliser, as a weed killer in the onion fields and for correcting acidic soils ?

  2. A.
    Urea
    B.
    CAN
    C.
    Ammonium sulphate
    D.
    Calcium cyanamide

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  3. __________ catalyst is used in the production of urea from CO2 and NH3.

  4. A.
    Vanadium pentoxide
    B.
    No
    C.
    Alumina
    D.
    Nickel

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  5. 5-10-5 fertilisers mean that they contain

  6. A.
    5, 10, 5% respectively of N2, P2O5 and K2O.
    B.
    only 5 to 10% active fertiliser constituents.
    C.
    5 to 10% filler & carrier of soil conditioners.
    D.
    none of these.

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  7. Color of nitric acid is light yellow due to the presence of

  8. A.
    NO
    B.
    NO2
    C.
    N2H5
    D.
    NH3

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  9. Catalytic ammonia synthesis reaction as in Haber's process is

  10. A.
    endothermic
    B.
    exothermic
    C.
    irreversible
    D.
    none of these

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  11. Tricresyl phosphate is chemically represented as

  12. A.
    (CH3 C6 H4)3 PO4
    B.
    Ca10(PO4)3F6
    C.
    (NH4)2HPO4
    D.
    NH4H2PO4

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  13. Steam reforming of naphtha produces ammonia synthesis gas. This is a/an __________ process.

  14. A.
    autocatalytic
    B.
    endothermic
    C.
    exothermic
    D.
    non-catalytic

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

  16. A.
    increases
    B.
    decreases
    C.
    remains unaltered
    D.
    can either increase or decrease depends on biuret content

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  17. Raw materials for nitric acid manufacture are

  18. A.
    hydrogen peroxide, air and water.
    B.
    anhydrous ammonia and air.
    C.
    anhydrous ammonia, air and water.
    D.
    wet ammonia, air and water.

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