A. Reduced iron oxide
B. Nickel
C. Vanadium pentoxide
D. Silica gel
Related Mcqs:
- 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 ?
A. Stabilisation
B. Increasing the effectiveness
C. Improving the strength & heat resistance
D. All A, B & C - Catalytic ammonia synthesis reaction as in Haber’s process is_________________?
A. Endothermic
B. Exothermic
C. Irreversible
D. None of these - 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 - Catalyst used in ammonia synthesis uses ____________ as a promoter?
A. Pt
B. K2O
C. Al2O3
D. Ni - Iron is not used alone as a catalyst in ammonia synthesis, because___________________?
A. Its activity declines rapidly, if heated to above 520°C
B. It decomposes ammonia
C. It gets oxidised above 500°C
D. None of these - Which is a catalyst promoter used in catalytic ammonia synthesis reaction ?
A. Al2O3
B. Cr2O3
C. K2O
D. MnO - Catalyst used in the oxidation of ammonia is ________________?
A. Platinum-beryllium
B. Platinum-rhodium
C. Cobalt-molybdenum
D. Platinum-molybdenum - In _____________ converter for ammonia synthesis, the catalyst is arranged in the form of a single continuous bed?
A. Fauser-Montecatini
B. Claude
C. Uhde
D. Kellogg - 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 - Which of the following is not a commercially used feed-stock for the production of ammonia synthesis gas ?
A. Water
B. Naphtha
C. Tar
D. Coal/coke oven gas
