Chemical Reactions Mcqs
Q.1: Pick out the wrong statement ?
A. For a first order consecutive reaction, a tubular flow reactor as compared to a stirred tank\
B. reactor provides higher overall selectivity+
C. For an ideal mixed reactor at steady state, the exit stream has the same composition as fluid]
D. within the reactor and the space time is equivalent to holding time for constant density system_
Q.2: Pick out the wrong statement ?
A. For the same conversion, the holding time required in a batch reactor, is always equal to the space time required in a PFRz
B. Two mixed reactors of unequal size are available for producing a specified product, formed by]
C. a homogenous second order reaction. To achieve maximum production rate, the smallerS
D. reactor should be placed in series before the larger reactor<
Q.3: Pick out the correct statement ?
A. A chemical reaction accompanied by absorption of heat is called an exothermic reactionV
B. A chemical reaction accompanied by evolution of heat is called an endothermic reactionV
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/
Q.4: Pick out the correct statement ?
A. A catalyst speeds up the forward reaction but slows shown the reverse reactionN
B. Addition of catalyst changes the equilibrium constant5
C. Pressure changes do not change the equilibrium concentrations=
D. The composition of equilibrium is changed by catalyst5
Q.5: Pick out the correct statement ?
A. A catalyst does not change AH of the reaction-
B. A catalyst changes the equilibrium point(
C. Law of mass action was suggested by Le-Chatelier0
D. The difference between the energy of reactants and that of the products is the activationY
Q.6: Pick out the wrong statement ?
A. Autocatalytic reactions are exemplified by microbial fermentation reactionsK
B. The slowest step has the greatest influence on the overall reaction rate in case of anV
C. irreversible series reaction
D. The fractional conversion at any time is same for both the constant as well as the variable[
Q.7: Pick out the wrong statement ?
A. Visible radiation provides the necessary activation energy in photochemical reactionsU
B. The order and molecularity of a complex reaction may not be the sameD
C. For a second order reaction, the slope of the graph/plot between rate and (concentration) is\
D. equal to the rate constant (k)
Q.8: Pick out the wrong statement ?
A. A catalyst does not alter the final position of equilibrium in a reversible reactionT
B. A catalyst initiates a reaction
C. A catalyst is specific in reaction"
D. A catalyst remains unchanged in chemical composition at the end the reactionL
Q.9: Pick out the wrong statement?
A. In a first order reaction, A products; the reaction becomes slower as it proceeds, because^
B. the concentration of A decreases and the rate is proportional to the concentration of AW
C. Transition state theory approaches the problem of calculating reaction rates by concentrating]
D. on the idea of activated complexes"
Q.10: Pick out the wrong statement ?
A. Hold back is defined as the fraction of material that stays longer than the mean residence timee
B. Study of non-ideal flow reactor is done experimentally by stimulus-response techniqueU
C. For studying a chemical reaction, it is desirable to monitor the reactants during initial stages`
D. and the products during the final stages of reaction4

Related Mcqs

All Subject Mcqs