A. Reaction can be accomplished with small reactor
B. Conversion can be obtained with a high feed rate
C. Both A. and B.
D. None of these
Related Mcqs:
- For the liquid phase zero order irreversible reaction A → B, the conversion of A in a CSTR is found to be 0.3 at a space velocity of 0.1min-1. What will be the conversion for a PFR with a space velocity of 0.2 min-1? Assume that all the other operating conditions are the same for CSTR and PFR ?
A. 0.15
B. 0.30
C. 0.60
D. 0.90 - A space velocity of 5 hr-1 means that ___________________?
A. Five reactor volumes of feed (at specified conditions) are being fed into the reactor per hour
B. After every 5 hours, reactor is being filled with the feed
C. Cent per cent conversion can be achieved in at least 5 hours
D. A fixed conversion of a given batch of feed takes 5 hours - Pick out the wrong statement pertaining to space velocity of flow reactors?
A. The unit of space velocity is (time)-1
B. The space velocity of 3 hr-1 means that three reactor volumes of feed at specified conditions
are being fed into the reactor every hour
C. The space velocity of 3 hr-1 means that one third reactor volume of feed at specified
conditions are being fed into the reactor
D. None of these - A space time of 3 hours for a flow reactor means that___________________?
A. The time required to process one reactor volume of feed (measured at specified conditions) is
3 hours
B. Three reactor volumes of feed can be processed every hour
C. It takes three hours to dump the entire volume of the reactor with feed
D. Conversion is cent per cent after three hours - The most unsuitable reactor for carrying out reactions in which high reactant concentration favours high yields is________________________?
A. Backmix reactor
B. Plug flow reactor
C. Series of CSTR
D. PFR in series - For a tubular reactor with space time ‘η’ and residence time ‘ζ’, the following statement holds good ?
A. η and θ are always equal
B. η = θ, when the fluid density changes in the reactor
C. η = θ, for an isothermic tubular reactor in which the density of the process fluid is constant
D. η = θ, for a non-isothermal reactor - With increase in the space time of an irreversible isothermal reaction being carried out in a P.F. reactor, the conversion will________________?
A. Increase
B. Decrease
C. Remain same
D. Data in insufficient; can’t be predicted - A gaseous reactant is introduced in a mixed reactor of 3 litres volume at the rate of 1 litre/second. The space time is ______________ seconds?
A. 1
B. 3
C. 1/3
D. 32 - An isothermal irreversible reaction is being carried out in an ideal tubular flow reactor. The conversion in this case will ______________ with decrease in space time?
A. Increase
B. Increase exponentially
C. Decrease
D. Remain unchanged - When the density of the reaction mixture is constant in a chemical reaction, the ratio of the mean residence time to space time is__________________?
A. > 1
B. < 1
C. 1
D. 0
