For an autocatalytic reactor, the suitable reactor set up is__________________?

Related Mcqs:

1. The following gas phase reaction is taking place in a plug flow reactor. A stoichiometric mixture of A and B at 300 K is fed to the reactor. At 1 m along the length of the reactor, the temperature is 360 K. The pressure drop is negligible and an ideal gas behaviour can be assumed. Identify the correct expression relating the concentration of A at the inlet (CA0), concentration of A at 1m (CA) and the corresponding conversion of A (X) ?

   A. CA = 1.2 CA0 (1 – X)/(1 – 0.33X)
   B. CA = 1.2 CA0 (1 – X)/(1 – 0.5X)
   C. CA = 0.83 CA0 (1 – X)/(1 – 0.33X)
   D. CA = 0.83 CA0 (1 – X)/(1 – 0.5X)

2. 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

3. In case of a _____________ reactor, the composition in the reactor and at the exit of the reactor is the same ?

   A. Semi-batch
   B. Tubular
   C. Batch
   D. Back-mix

4. Pure ethanol vapor is fed to a reactor packed with alumina catalyst, at the rate of 100 kmole / hr. The reactor products comprise: ethylene: 95 kmole / hr, water vapour: 97.5 k mole / hr and diethyl ether: 2.5 kmole/hr. The reactions occuring can be represented by: C2H5OH → C2H4 + H2O 2C2H5OH → C2H5 – O – C2H5 + H2O The percent conversion of ethanol in the reactor is________________?

   A. 100
   B. 97.5
   C. 95
   D. 2.5

5. For nearly isothermal operation involving large reaction time in a liquid-phase reaction, the most suitable reactor is a _________________ reactor?

   A. Stirred tank
   B. Tubular flow
   C. Batch
   D. Fixed bed

6. Autocatalytic reactions are best carried out in a_________________?

   A. CSTR
   B. CSTR in series
   C. Plug flow reactor
   D. Recycle reactor

7. In autocatalytic reactions ?

   A. One of the reactants acts as a catalyst
   B. One of the products acts as a catalyst
   C. Catalysts have very high selectivity
   D. No catalyst is used

8. The rate of an autocatalytic reaction as shown in the bellow figure, is given by – rA = k . CA . CB. In this case, the__________________?

   A. Plot of – rA Vs CA is a straight line with slope k
   B. Plot of – rA Vs CA is a hyperbola
   C. Rate of disappearance of reactant A is maximum, where CA = CB
   D. Both B & C

9. Rate of an autocatalytic chemical reaction is a function of ___________________?

   A. Temperature only
   B. Pressure only
   C. Composition only
   D. All A., B. and C.

10. Which of the following is an autocatalytic reaction ?

    A. Photochemical reactions
    B. Microbial fermentation reaction
    C. Enzyme fermentation reaction
    D. Ammonia synthesis reaction