A. Increases the yield of urea
B. Adversely affects the yield of urea
C. Reduces the evaporator load by diluting the urea solution
D. Does not affect the yield of urea
Related Mcqs:
- Dehydration of ammonium carbamate (to produce urea) is a/an _____________ reaction?
A. Reversible
B. Catalytic
C. Exothermic
D. Endothermic - Dehydration of ammonium carbamate to yield urea is a/an __________________ reaction?
A. Exothermic
B. Endothermic
C. Autocatalytic
D. Catalytic - With increases in pressure, the conversion of Ammonium carbamate into urea___________________?
A. Increases
B. Decreases
C. Remains unaltered
D. Can either increase or decrease depends on biuret content - Dehydration of ammonium carbamate produces__________________?
A. Urea
B. Biuret
C. Ammonia water
D. None of these - Formation of ammonium carbamate by reaction of NH3 with CO2 is a/an ______________ reaction?
A. Catalytic
B. Exothermic
C. Endothermic
D. Reversible - 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 - Urea is a better fertilizer than ammonium sulphate, because__________________?
A. It is cheaper
B. Nitrogen content is higher
C. It is not poisonous
D. It is easy to manufacture - 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 - 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. - During nitric acid manufacture, catalytic oxidation of ammonia at 800°C in presence of platinum catalyst produces nitrogen oxide. Conversion of NH3 to NO is about ______________ percent?
A. 38
B. 68
C. 82
D. 98
