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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. Commercial production of hydrogen for the manufacture of nitrogeneous fertilisers is done by

    2. A.

     Steam reforming of naphtha and cracking of natural gas
    B.

     Electrolysis of water
    C.

     Cryogenic separation of hydrogen from coke oven gas
    D.

     All of the above

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  2. Which of the following nitrogenous fertilisers has the highest percentage of nitrogen?

    3. A.

     Calcium nitrate
    B.

     Calcium ammonium nitrate (CAN)
    C.

     Urea
    D.

     Ammonium sulphate

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

    4. A.

     Mono-ethanolamine (MEA)
    B.

     Slaked lime
    C.

     Ammoniacal liquor
    D.

     Methyl-Ethyl Ketone (MEK)

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  4. Urea is a better fertilizer than ammonium sulphate, because

    5. A.

     It is cheaper
    B.

     Nitrogen content is higher
    C.

     It is not poisonous
    D.

     It is easy to manufacture

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  5. Which is the best fertiliser for paddy?

    6. A.

     Ammonium sulphate
    B.

     Nitro-phosphate
    C.

     Superphosphate
    D.

     Potassium nitrate

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  6. Rock phosphate constitutes mainly of

    7. A.

     Fluorapatite
    B.

     Di-calcium phosphate
    C.

     Mono-calcium phosphate
    D.

     Di-ammonium phosphate

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  7. Electric furnace method for production of phosphorous uses phosphate rock

    8. A.

     And phosphoric acid
    B.

     And coke
    C.

     And sulphuric acid
    D.

     Silica and coke

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  8. Reaction of orthophosphoric acid with soda ash produces

    9. A.

     Sodium tripolyphosphate (STPP)
    B.

     Tricresyl phosphate
    C.

     Tributyl phosphate
    D.

     Nitrophosphate

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  9. Pick out the correct statement.

    10. 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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  10. The composition of fresh feed to the high temperature, high pressure urea autoclave is

    11. A.

     Excess liquid ammonia and liquefied CO₂
    B.

     Excess liquid ammonia and compressed CO₂ gas
    C.

     Liquid ammonia and excess compressed CO₂
    D.

     Compressed ammonia gas and excess compressed CO₂

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