Related Questions

Overall rate of reaction in a heterogenous catalytic reaction depends upon the mass and energy transfer from the fluid to solid surface and its rate of reaction is usually __________ the concentration of catalyst, if it does not entail a chain mechanism.
A Proportional to
B Independent of
C Inversely proportional to
D Proportional to the square of
For a __________ order reaction, the units of rate constant and rate of reaction are the same.
A Zero
B First
C Second
D Fractional
In order to have constant chain reaction to produce a constant rate of heat output, the value of ratio of the number of neutrons in one generation to the number of neutrons in the immediately preceding generation must be
A Greater than 1.0
B Less than 1.0
C Equal to zero
D Equal to 1.0
The rate constant of a reaction depends on the
A Initial concentration of reactants
B Time of reaction
C Temperature of the system
D Extent of reaction
The half life period of a first order reaction is given by (where, K = rate constant. )
A 1.5 K
B 2.5 K
C $$\frac{{0.693}}{{\text{K}}}$$
D 6.93 K
For a first order chemical reaction, the rate constant
A Changes on changing the concentration units
B Is not a function of the unit of time
C Has unit of time-1
D None of these
An endothermic aqueous phase first order irreversible reaction is carried out in an adiabatic plug flow reactor. The rate of reaction
A Is maximum at the inlet of the reactor
B Goes through a maximum along the length of the reactor
C Goes through a minimum along the length of the reactor
D Is maximum at the exit of the reactor
A second order reaction of the form A + B → C is called a pseudo-first order reaction, when
A CA0 = CB0
B CA0 > CB0
C CB0 > CA0
D CB0 ≥ CB0
The equilibrium constant K of a chemical reaction depends on
A Temperature only
B Pressure only
C Temperature and pressure
D Ratio of reactants
The optimum size ratio for two mixed reactors in series depends on the kinetics of the reaction and the conversion level. For reaction orders more than one, the
A Equal sized reactors are the best
B Smaller reactor should come first
C Larger reactor should come first
D None of these

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