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.Management Sciences
Category: Fertilizer Technology
Pick out the wrong statement?
A. Loamy soil is the best soil for vigorous plant growth, while the clayey soil is solid and hence
the plant roots penetrate with difficulty
B. Large excess use of nitrogenous fertiliser in land causes the problem of diarrhoea and cyanosis
C. Application of large excess of Potassic fertiliser in soil increases the valuable carotene in
fruits and vegetables
D. Cereal crops grown on alkaline soil absorb higher amount of fluorides thereby spreading
fluorosis
Which of the following fertilisers is needed for promoting the development of leaves and stems during early stages of plant growth ?
A. Nitrogenous fertiliser
B. Potassic fertiliser
C. Phosphatic fertiliser
D. None of these
Which nutrient in fertiliser makes the plant stems stronger and increases branching ?
A. Nitrogen
B. Phosphorous
C. Potassium
D. Calcium
Phosphatic fertilisers_________________?
A. Are useful during early stage of the plant growth
B. Accelerate fruit formation in later stages of growth
C. Lessen the effect of excessive nitrogen application
D. None of these
Which of the following set of conditions is favourable for the maximum yield of ammonia by Haber’s process ?
A. High pressure, low reactants concentration, high temperature
B. High pressure, low reactants concentration, low temperature
C. High pressure, high reactants concentration, low temperature
D. Low pressure, high reactants concentration, low temperature
Prilling of urea should be accomplished (in a sprayer) just above the melting point of urea with minimum of retention time, otherwise it will result in__________________?
A. Low bulk density product
B. Biuret formation
C. Non-spherical prills
D. Substantially wet non-flowing and sticky product
Reaction of calcium Fluorapatite with sulphuric acid produces ___________________?
A. Ortho-phosphoric acid
B. Simple superphosphate
C. Triple superphosphate
D. Red phosphorous
Urea (a nitrogenous fertiliser) is produced from carbon dioxide and__________________?
A. Nitric acid
B. Ammonia
C. Ammonium nitrate
D. Nitric oxide
P2O5 percentage in the phosphoric acid produced by wet process is about_________________?
A. 10
B. 30
C. 50
D. 70
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