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.Management Sciences
Category: Fertilizer Technology
Use of catalyst is a must in the ammonia manufacture, because the reaction is reversible as well as the heat of dissociation of N2 & H2 is high. The presence of promoter along with the catalyst helps in ______________ of the catalyst ?
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A. Stabilisation
B. Increasing the effectiveness
C. Improving the strength & heat resistance
D. All A, B & C
A nitrogenous fertiliser contains 20% N2. It could be_________________?
A. Ammonium nitrate
B. Calcium ammonium nitrate (CAN)
C. Urea
D. Ammonium chloride
Superphosphate is manufactured by reacting phosphate rock with_____________________?
A. Acetic acid
B. Sulphuric acid
C. Aluminium chloride
D. None of these
Conversion of yellow phosphorous to red phosphorous is done by heating it in covered retorts at ____________ °C in absence of air?
A. 50-80
B. 250-400
C. 1000-1200
D. 800-900
Nitrogen content of a nitrogenous fertiliser is 35%. It could be___________________?
A. Urea
B. Ammonium nitrate
C. Calcium ammonium nitrate (CAN)
D. Ammonium sulphate
Montecatini process is used for the manufacture of____________________?
A. Nitric acid
B. Phosphoric acid
C. Urea
D. Calcium ammonium nitrate (CAN)
In calcium ammonium nitrate (CAN) fertiliser ____________________?
A. Nitrate nitrogen is quick acting
B. Ammoniacal nitrogen is quick acting
C. Nitrate nitrogen is slower acting
D. None of these
Heating of ortho-phosphoric acid to about 900°C, produces_________________?
A. Meta-phosphoric acid
B. Pyrophosphoric acid
C. No change in it
D. None of these
Dehydration of ammonium carbamate (to produce urea) is a/an _____________ reaction?
A. Reversible
B. Catalytic
C. Exothermic
D. Endothermic
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