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Chemical Engineering :: Fertiliser Technology

  1. Pick out the wrong statement.

  2. A.
    Yellow phosphorous which is the most reactive allotropic form of phosphorous is transported under water.
    B.
    Apatite is the principal material present in phosphate rock which is chemically Ca10 (PO4)6 (F, Cl, OH).
    C.
    Urea is more hygroscopic than ammonium nitrate.
    D.
    Nitrogen fixation means the process of bringing atmospheric nitrogen into combination i.e. into nitrogen compound form.

  3. Which of the following does not come under the category of 'secondary nutrient' for plant growth?

  4. A.
    Calcium
    B.
    Magnesium
    C.
    Sulphur
    D.
    Oxygen

  5. 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 ?

  6. A.
    1.5:1
    B.
    3.5:1
    C.
    10:1
    D.
    15:1

  7. (CH3 C6 H4)3 PO4 is the chemical formula of

  8. A.
    triple superphosphate
    B.
    tricresyl phosphate
    C.
    flourapatite
    D.
    superphosphate

  9. Which is a catalyst promoter used in catalytic ammonia synthesis reaction ?

  10. A.
    Al2O3
    B.
    Cr2O3
    C.
    K2O
    D.
    MnO

  11. The concentration (weight %) of nitric acid produced by the oxidation of ammonia and absorption of nitrogen oxides with water is about __________ percent.

  12. A.
    60
    B.
    30
    C.
    95
    D.
    100

  13. Urea is a __________ fertiliser.

  14. A.
    nitrogenous
    B.
    potassic
    C.
    phosphatic
    D.
    none of these

  15. Calcium ammonium nitrate (CAN) is

  16. A.
    a mixed fertiliser
    B.
    a straight fertiliser
    C.
    a complex fertiliser
    D.
    not a fertiliser ; it is an explosive

  17. CO2 present in reformed gas (obtained by steam reforming of naphtha) is removed by absorbing in

  18. A.
    mono-ethanolamine (MEA)
    B.
    slaked lime
    C.
    ammoniacal liquor
    D.
    Methyl-Ethyl Ketone (MEK)

  19. Which is the most suitable fertiliser for paddy ?

  20. A.
    CAN
    B.
    Ammonium sulphate
    C.
    Ammonium nitrate
    D.
    Superphosphate