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.Management Sciences
Category: Fertilizer Technology
Which one of the following is used as a nitrogenous fertiliser, as a weed killer in the onion fields and for correcting acidic soils ?
A. Urea
B. CAN
C. Ammonium sulphate
D. Calcium cyanamide
Two gas based fertiliser plants are located in India are_________________?
A. Maharashtra and Gujarat
B. Maharashtra and Orissa
C. Gujarat and Madhya Pradesh
D. Jharkhand and Chhattisgarh
Leaching of phosphate rock by strong ____________ acid produces phosphoric acid ?
A. Sulphuric
B. Hydrochloric
C. Either A. or B.
D. Neither A. nor B.
HPO3 is the chemical formula of ______________ phosphoric acid?
A. Pyro
B. Ortho
C. Meta
D. None of these
Oxidation of ammonia is________________?
A. Exothermic
B. Endothermic
C. Non-catalytic
D. Autocatalytic
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
Pick out the wrong statement?
A. All the nitrogenous fertilisers are not soluble in water
B. A straight fertiliser contains only one nutrient
C. Calcium cyanamide is used as weed killer in onion fields
D. The phosphorous nutrient makes the plant stem stronger and increases its branches
Color of nitric acid is light yellow due to the presence of__________________?
A. NO
B. NO2
C. N2H5
D. NH3
Heating a mixture of phosphate rock, coke and sand in an electric furnace produces___________________?
A. Phosphoric acid
B. Ammonium phosphate
C. Phosphorous
D. Superphosphate
Which of the following is not a measure component necessarily to be present in fertilisers ?
A. Nitrogen
B. Potassium
C. Phosphorous
D. Sulphur
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