Related Questions

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
Catalyst used in the oxidation of ammonia is
A Platinum-beryllium
B Platinum-rhodium
C Cobalt-molybdenum
D Platinum-molybdenum
Catalyst used in ammonia synthesis uses __________ as a promoter.
A Pt
B K2O
C Al2O3
D Ni
Which is a catalyst promoter used in catalytic ammonia synthesis reaction?
A Al2O3
B Cr2O3
C K2O
D MnO
Fertiliser plant making ammonium sulphate employing gypsum-ammonia reaction (usual practice is to use ammonia and sulphuric acid) is located at
A Rourkela (under SAIL)
B Bokaro (under SAIL)
C Sindri (under FCI)
D Baroda (under G.S.F.C.)
For the hydrogenation of oils (i) __________ is commonly used as catalyst and (ii) __________ is a catalyst poison.
A (i) platinum (ii) sulphur
B (i) palladium (ii) oxygen
C (i) nickel (ii) sulphur
D (i) nickel (ii) oxygen
In __________ converter for ammonia synthesis, the catalyst is arranged in the form of a single continuous bed.
A Fauser-Monte Catini
B Claude
C Udhe
D Kellog
A catalyst is said to be a negative catalyst, ifit
A Retards the rate of reaction
B Reduces the value of equilibrium constant
C Does not initiate the reaction
D All of the above
Effectiveness factor (E) of a catalyst pellet is defined as, E = (actual rate within pore of catalyst/rate if notsnowed by pore diffusion) Effectiveness factor for a first order reaction is given by (where, T = Thiele modulus)
A Tan hT/T
B Tan T/T
C Tan hT/tan T
D None of these
__________ process is used for the commercial production of nitric acid by the catalytic oxidation of ammonia.
A Solvay
B Ostwald's
C Haber's
D None of these

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