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Fertiliser Technology

Fertiliser Technology
Which of the following is not a measure component necessarily to be present in fertilisers?

Potassium
Nitrogen
Sulphur
Phosphorous

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Fertiliser Technology
Iron is not used alone as a catalyst in ammonia synthesis, because

Its activity declines rapidly, if heated to above 520°C
It decomposes ammonia
It gets oxidised above 500°C
None of these

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Fertiliser Technology
Which of the following does not come under the category of'primary nutrient' for plant growth?

Nitrogen
Potassium
Sulphur
Phosphorous

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

Ammonium nitrate
Ammonium sulphate
Calcium ammonium nitrate (CAN)
Urea

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Fertiliser Technology
Catalyst used in ammonia synthesis uses __________ as a promoter.

Al2O₃
Pt
K₂O
Ni

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

Explosive in nature
Helpful in decomposition of urea
Corrosive in nature
Toxic and harmful to some crops

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