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.Management Sciences
Category: Reaction Kinetics
In rate expression the concentration of reactants is negative. It shows_______________?
A. Concentration of reactant does not change
B. Concentration of product increases
C. Concentration of reactant decreases
D. Concentration of reactant increases
Sum of exponents of molar concentration is called___________________?
A. Order of reaction
B. Molecularity
C. Rate of reaction
D. Average of reaction
On increasing the temperature the rate of reaction increases mainly because_________________?
A. The activation energy of the reaction increases
B. Concentration of the reacting molecules increases
C. Collision frequency increases
D. None of these
Activated complex is formed due to________________?
A. Pressure
B. Effective collision
C. Ineffective collisions
D. Temperature
Which statement is incorrect about catalyst___________________?
A. it is used in smaller amount
B. decrease activation energy
C. specific in action
D. it affects specific rate constant
Greater the conc. Of reactant__________________?
A. Greater will be dx/dt
B. Lesser will be dx/dt
C. dx/dt will be moderate
D. any of above
An enzyme has its specificity due to________________?
A. Substrate
B. Structure
C. Temperature
D. Pressure
Rate of reaction when concentration of reactants are taken as unity is called_________________?
A. Arrhenius constant
B. Molecularity
C. Specific rate constant
D. Ideal rate constant
The rate of reaction___________________?
A. Increases as the reaction proceeds
B. Decreases as the reaction proceeds
C. Remains the same as the reaction proceeds
D. May decrease or increase as the reaction proceeds
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