Temperature and pressure in urea autoclave is_________________?
A. 120°C and 300 atm
B. 190°C and 200 atm
C. 400°C and 550 atm
D. 200°C and 10 atm
Fertilizer Technology
_____________ is the undesirable by-product produced in the manufacture of urea ?
_____________ is the undesirable by-product produced in the manufacture of urea ?
A. Ammonium carbonate
B. Biuret
C. Carbon dioxide
D. Ammonium carbamate
A Potassic fertiliser contains 50% K2O. It could be _________________?
A Potassic fertiliser contains 50% K2O. It could be _________________?
A. Potassium sulphate
B. Potassium chloride
C. A mixture of NaCl + KCl
D. None of these
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__________________?
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
Which nutrient in fertiliser makes the plant stems stronger and increases branching ?
Which nutrient in fertiliser makes the plant stems stronger and increases branching ?
A. Nitrogen
B. Phosphorous
C. Potassium
D. Calcium
Conversion of yellow phosphorus to red phosphorous is done in retorts at 250-450°C in the ___________________?
Conversion of yellow phosphorus to red phosphorous is done in retorts at 250-450°C in the ___________________?
A. Presence of an inert atmosphere
B. Presence of a reducing atmosphere
C. Absence of air
D. Presence of an oxidising atmosphere
In natural gas, the C/H ratio (by weight) varies in the range of_________________?
In natural gas, the C/H ratio (by weight) varies in the range of_________________?
A. 3-4
B. 8-10
C. 15-17
D. 20-25
CaH4(PO4)2 is the chemical formula of ___________________?
CaH4(PO4)2 is the chemical formula of ___________________?
A. Superphosphate
B. Triple superphosphate
C. Calcium phosphate
D. Meta phosphoric acid
C/H ratio (by weight) of naphtha used in nitrogenous fertiliser making is about_________________?
C/H ratio (by weight) of naphtha used in nitrogenous fertiliser making is about_________________?
A. 2
B. 6
C. 13
D. 20
Temperature and pressure in ammonia converter is_________________?
Temperature and pressure in ammonia converter is_________________?
A. 200 atm, 1000°C
B. 450 atm, 200°C
C. 450 atm, 550°C
D. 450 atm, 1000°C