Phosphatic fertiliser is graded based on its _____________ content?
Phosphatic fertiliser is graded based on its _____________ content?
A. P2O3
B. PCl5
C. P2O5
D. H3PO4
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Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of ____________ this is normally not done?
Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of ____________ this is normally not done?A. Increased biuret formation
B. High corrosion rate
C. Increased cost of equipment
D. All A., B. & C.Bio-fertilisers are cheaper, renewable and pollution free. They improve the _____________ of the soil?
Bio-fertilisers are cheaper, renewable and pollution free. They improve the _____________ of the soil?A. Nutrient supply
B. Texture
C. Water holding capacity
D. All A., B. and C.Rock phosphate constitutes mainly of___________________?
Rock phosphate constitutes mainly of___________________?A. Fluorapatite
B. Di-calcium phosphate
C. Mono-calcium phosphate
D. Di-ammonium phosphateAmmonia synthesis gas is produced from fuel oil by _________________?
Ammonia synthesis gas is produced from fuel oil by _________________?A. Steam reforming
B. Hydro-cracking
C. Partial oxidation
D. HydrogenationIn an ammonia plant, the purge off is essential to___________________?
In an ammonia plant, the purge off is essential to___________________?A. Maintain inert gas concentration within a limit
B. Remove excess poisonous gases
C. Maintain H2 : N2 ratio at 3 :1
D. Remove uncondensed ammonia vapourPhosphatic fertilisers_________________?
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