Entry Test MCQ :: Reaction Kinetics

1.  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

2.  The addition of a catalyst to the reaction system
A. Increases the rate of forward reaction only B. Increases the rate of reverse reaction
C. Increases the rate of forward but decreases the rate of backward reaction D. Increases the rate of forward as well as backward reaction equally

3.  The specific rate constant of a first order reaction depends on the
A. Time B. Concentration of the reactant
C. Temperature D. Concentration of the product

4.  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

5.  ?d[N2O5]/dt represents
A. Rate of formation of N2O5 B. Rate of decomposition of N2O5
C. order of the reaction D. none

6.  The value of activation energy is primarily determined by
A. Temperature B. Effective collision
C. Concentration of reactants D. Chemical nature of reactants and products

7.  Sum of exponents of molar concentration is called
A. Order of reaction B. Molecularity
C. Rate of reaction D. Average of reaction

8.  Spontaneous reactions are
A. Moderate B. Slow
C. Fast D. not natural

9.  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

10.  Unit of rate of reaction is
A. Moles dm-3 sec-1 B. Moles dm-3
C. Moles sec-1 D. Mol-1 dm3 sec-1

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