Question 2: The rate constant of a reaction is 3 x 10 2 min -1 . What is the order of the reaction?
Answer: A (First)
Question 3: For a reaction R→P, half life (t 1/2) is observed to be independent of the initial concentration of reactants. What is the order of reaction?
None of these
Answer: B (First)
Question 4: A reaction in which reactants are converted into products follows second order kinetics. If concentration of R is increases by four times, what will be the increase in rate of formation of P?
Answer: C (16 times)
Question 5: The order of reaction is decided by
Mechanism of reaction as well as relative concentration of reactants
Answer: B (Mechanism of reaction as well as relative concentration of reactants)
Question 6: Which of the following for order of reaction is not correct?
Order can be determined experimentally
Order of reaction is equal to the sum of powers of concentration term in rate law expression.
Order cannot be fractional
Order is not affected by stoichiometric coefficient of the reactants.
Answer: C (Order cannot be fractional)
Question 7: A reaction is of second order with respect to a reactant. How is the rate of reaction affected, if the concentration of reaction is reduced to half?
Answer: B (1/4 times)
Question 8: For a chemical reaction , R→P, the variation in concentration of R with time pot is given as below, predict the order of reaction?
Answer: A (zero order)
Question 9: For a reaction A+ B → P, the rate law is given by , r = k[A]1/2 [B]2 . What is the order of this reaction?
Answer: C (5/2)
Question 9: The overall rate of reaction is governed by
The rate of fastest intermediate step
The sum of the rates of all intermediate steps
The average of the rates of all the intermediate steps