Are the same as those of the rate constant
Depend on the order of the reaction
Depend on temperature, pressure etc. of the reaction
Are cycles per unit time
✅ The correct answer is option A.
Chemical Reaction Engineering MCQs
For a heterogenous catalytic reaction, A + B → C, with equimole feed of A and B, the initial rate – rA0 is invariant with total pressure. The rate controlling step is
Surface Kc/(1 + TS) reaction between absorbed A and B in the gas phase
Surface reaction between absorbed A and absorbed B
Surface reaction between A in the gas phase and absorbed B
Desorption of C
✅ The correct answer is option D.
Rate of an autocatalytic chemical reaction is a function of
Temperature only
Pressure only
Composition only
All of the above
✅ The correct answer is option D.
With decrease in temperature, the equilibrium conversion of a reversible endother- mic reaction
Decreases
Increases
Remains unaffected
Increases linearly with temperature
✅ The correct answer is option A.
Transition state theory gives the rate constant as
K α e-E/RT
K α eE/RT
K α T . e-E/RT
K α √T . e-E/RT
✅ The correct answer is option C.
The molecularity and the order of reaction respectively, for the hydrolysis of methyl acetate in presence of acids are
2 & 1
11 & 2
2 && 2
1 & 1
✅ The correct answer is option A.
Considering the endotheomic dissociation of CaCO₃ in a closed vessel (CaCO₃ ⇋ CaO + CO₂), the pressure of CO₂ increases, if
A catalyst is added
The temperature is increased
An inert gas is pumped keeping the temperature constant
None of these
✅ The correct answer is option B.
From Arhenius law, a plot of loge K versus 1/T gives a straight line with a slope of (-E/R). The unit of E/R is
K cal
K cal/°K
°K
K cal. °K
✅ The correct answer is option C.
Pick out the wrong statement
For the same conversion, the holding time required in a batch reactor, is always equal to the space time required in a PFR
Two mixed reactors of unequal size are available for producing a specified product, formed by a homogenous second order reaction. To achieve maximum production rate, the smaller reactor should be plac
Arrehenius equation describing the effect of temperature on rate constant is given by, K = A.e-Ea/RT
The mechanism for the decomposition of CH₃CHO into CH₄ and CO in presence of I₂ is:
CH₃CHO +I₂ CH₃I + HI + CO; slow
CH₃I + HI CH₄ + I₂; fast
Then the rate of disappearance
CH₃CHO +I₂ CH₃I + HI + CO; slow
CH₃I + HI CH₄ + I₂; fast
Then the rate of disappearance
✅ The correct answer is option D.