A. A P.F. reactor in series
B. A P.F. reactor in parallel
C. More CSTR’s in series
D. More CSTR’s in parallel
Related Mcqs:
- The optimum performance for reactors operating in parallel is obtained when the feed stream is distributed in such a way, that the_________________?
A. Space time for each parallel line is same
B. Space time for parallel lines is different
C. Larger reactors have more space time compared to smaller ones
D. None of these - In flow reactors, the performance equations interrelate the rate of reaction to the___________________?
A. Feed rate
B. Reactor volume
C. Extent of reaction
D. All A., B. and C. - The value of ‘n’ for a chemical reaction A → B, whose reaction rate is → CA n, will be _______________ if the rate of the reaction increases by a factor of 8, when the concentration of is doubled?
A. 0
B. 1
C. 2
D. 3 - 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) - Pick out the correct statement ?
A. A chemical reaction accompanied by absorption of heat is called an exothermic reaction
B. A chemical reaction accompanied by evolution of heat is called an endothermic reaction
C. The rate constant for a first order reaction does not change on changing the concentration units
D. Chemical equilibrium state is dynamic in nature - 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 effectiveness factor for large value of Thiele modulus [L√(K/D1)] of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D1 = diffusion co-efficient, cm2/second) ?
A. L √(K/D1)
B. 1/[L√(K/D1)]
C. 1
D. ∞ - Rate of a chemical reaction is independent of the concentration of the reactants for a _________________ reaction?
A. Zero order
B. Third order
C. Consecutive
D. None of these - For a tubular flow reactor with uniform concentration and temperature, the independent variable is___________________?
A. Time
B. Length
C. Diameter
D. None of these - Velocity of a chemical reaction___________________?
A. Decreases with increase in temperature
B. Increases with increase of pressure of reactants for all reactions
C. Decreases with increase of reactant concentration
D. None of these
