A. Activation energies of a reaction
B. Reaction mechanism
C. Extent of non-ideal flow in the vessel
D. None of these
Related Mcqs:
- The exit age distribution of a fluid leaving a vessel (denoted by E) is used to study the extent of non-ideal flow in the vessel. The value of ∫∞ 0 E.dt is____________________?
A. 0
B. 1
C. ∞
D. √2π - The exit age distribution curve E(t) for an ideal CSTR with the average residence time, η, is given by__________________?
A. e-t/η
B. e-t/η/η
C. 1 – e-t/η
D. 1 – (e-t/η/η) - For an ideal mixed flow reactor (CSTR), the exit age distribution E(t) is given by __________________?
A. A Dirac delta function
B. A step function
C. A ramp function
D. None of the above - The reaction A → B is conducted in an adiabatic plug flow reactor (PFR). Pure A at a concentration of 2 kmol/m3is fed to the reactor at the rate of 0.01 m3 /s and at a temperature of 500 K. If the exit conversion is 20%, then the exit temperature (in k) is (Data: Heat of reaction at 298 K = – 50000 kJ/ kmole of A reacted Heat capacities CPA = CPB = 100kJ/kmole. K (may be assumed to be independent of temperature)) ?
A. 400
B. 500
C. 600
D. 1000 - In a/an _____________ vessel, the fluid enters and leaves following plug flow?
A. Open
B. Closed
C. Open-closed
D. Close-opened - The conversion in a mixed reactor/accomplishing a reaction A → 3R is 50% when gaseous reactant ‘A’ is introduced at the rate of 1 litre/second and the leaving flow rate is 2 litres/second. The holding time for this operation is _______________ second?
A. 0.5
B. 1
C. 2
D. 3 - The ‘E’ curve for a non-ideal reactor defines the fraction of fluid having age between t and t + dt _____________________?
A. At the inlet
B. At the outlet
C. In the reactor
D. Averaged over the inlet and outlet - The conversion for a first order liquid phase reaction. A → B in a CSTR is 50%. If another CSTR of the same volume is connected in series, then the % conversion at the exit of the second reactor will be_____________________?
A. 60
B. 75
C. 90
D. 100 - Pure A in gas phase enters a reactor 50% of this A is converted to B through the reaction, A → 3B. Mole fraction of A in the exit stream is______________________?
A. 1/2
B. 1/3
C. 1/4
D. 1/5 - The gas phase reaction 2A ⇌ B is carried out in an isothermal plug flow reactor. The feed consists of 80 mole % A and 20 mole % inerts. If the conversion of A at the reactor exit is 50%, then CA/CA0 at the outlet of the reactor is _______________________?
A. 2/3
B. 5/8
C. 1/3
D. 3/8
