Fertilizer Technology MCQs

186 MCQs  — Chemical Engineering MCQs  (Page 4 of 19)

Attempt Fertilizer Technology Quiz
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.
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The concentration (weight %) of nitric acid produced by the oxidation of ammonia and absorption of nitrogen oxides with water is about ____________ percent?
A. 60
B. 30
C. 95
D. 100
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Heating of coke, sand & phosphate rock in an electric furnace is done for the manufacture of_________________?
A. Phosphoric acid
B. Superphosphate
C. Phosphorous
D. Triple superphosphate
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Lower temperature and large excess of ammonia in urea melt__________________?
A. Increases biuret formation
B. Decreases biuret formation
C. Is undesirable
D. Does not effect biuret formation
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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.
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Montecatini process is used for the manufacture of____________________?
A. Nitric acid
B. Phosphoric acid
C. Urea
D. Calcium ammonium nitrate (can)
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Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium___________________?
A. Carbonate
B. Phosphate
C. Bicarbonate
D. Silicate
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Which of the following is the costliest method for commercial production of hydrogen for ammonia synthesis ?
A. H2 separation from coke oven gas
B. Steam reforming of naphtha
C. Cracking of natural gas
D. Electrolysis of water
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Urea is formed only____________________?
A. In liquid phase
B. In vapour phase
C. At very high temperature
D. At very low pressure (vacuum)
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A mixture of phosphate rock ______________ is heated in an electric furnace to produce phosphorous?
A. Salt & coke
B. Sand & coke
C. And coke
D. And sand
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Word of the Day
22 Jul
Combative
ready or eager to fight or argue.
لڑاکا، متنازع، جھگڑالو

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