An imbalanced equation is against the
A.law of gaseous volumes
B.law of constant proportions
C.law of conservation of mass
D.law of multiple proportions
Category: Chemical Reaction Engineering Mcqs
The dimensions of the rate constant for nth order homogeneous reaction are
A.(time)-n
B.(time)-1 (concentration)1-n
C.(time)-n (concentration)n-1
D.(time) (concentration)n-1
The rate constant for N2O5 decomposition reaction is found to be 6.2 x 10-4 S-1. The time required for one-half the N2O5 in a sample to be decomposed is
A.6.2 x 104 s
B.3710 s
C.1513 s
D.1120 s.
For a steady-state mixed reactor the space-time is equivalent to the holding time for
A.constant fluid density systems
B.variable fluid density systems
C.non-isothermal gas reactions
D.gas reactions with changing number of moles.
For constant-density systems, the performance equations are identical for
A.batch reactor and plug flow reactor
B.batch reactor and backmix reactor
C.plug flow reactor and backmix reactor
D.batch reactor, plug flow reactor and beckmix reactor.
Which of the following types of tracer input signal can be used to study the extent of non-ideal flow?
A.Periodical signal
B.Step signal
C.Pluse signal
D.All of the above
For the non-catalytic reaction of particles with surrounding fluid, the time needed to achieve the same fractional conversion for particles of different but unchanging sizes is proportional to the diameter of the particle when
A.chemical reaction is the controlling resistance
B.diffusion through ash layer is the controlling resistance
C.film diffusion is the controlling resistance.
At equilibrium
A.the rate of forward reaction is equal to the rate of backward reaction
B.the rate of forward reaction is more than the rate of backward reaction
C.the rate of forward reaction is less than the rate of backward reaction
D.chemical reaction stops
For identical feed composition, flow rate, conversion and for all positive reaction orders the ratio of the volume of mixed reactor to the the volume of plug flow reactor
A.is independent of the order of reaction
B.increases with increase in the order of reaction
C.decreases with increase in the order of reaction
D.increases linearly with increase in the order of reaction.
A chemical reaction occurs when the energy of the reacting molecules is
A.less than the activation energy of the reaction
B.equal to the activation energy of the reaction
C.more than the activation energy of the reaction
D.equal to or more than the activation energy of the reaction
