1. The rate of a reaction……. as the reaction proceeds
a. increases
b. decreases
c. remains same
d. may increase or decrease
2. The unit of rate constant is the same as that of the rate of reaction in …. order reaction
a. zero
b. first
c. second
d. third
3. For the reaction 2A+ B ………> C , the rate law for the reaction is
a. Rate = k[A]2[B]
b. Rate = k[A][B]
c. Rate = k[C]
d. none of these
4. For the reaction 2A + B ……> C + D. The expression for the rate law is rate = k[A]2, the order of the reaction in B is
a. zero
b. first
c. second
d. third
5. The activation energy for the reaction can be
a. increased by increasing temperature
b. increased by decreasing temperature
c. decreased by increasing concentration of reactants
d. none of these
6. Rate law for the reaction R-X +H2O ….> R-OH + HX is, rate = k[R-X], the rate of reaction will be doubled when
a. concentration of H2O is doubled
b. concentration of R-X is reduced to half
c. concentration of R-X and H2O is doubled
d. none of these
7. The rate of a catalyzed reaction is independent of the concentration of
a. reactants
b. products
c. catalyst
d. zero
8. If a reaction proceeds in such a way that order of a reaction is independent of the reactants concentration, the overall order of the reaction would be
a. zero
b. first
c. second
d. none
9. Reactions with high activation energy are usually
a. fast
b. slow
c. reversible
d. exothermic
10. In a reversible reaction, catalyst lowers the activation energy of the
a. forward reaction
b. reverse recation
c. b. slow
d. has no effect
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