JEE Advanced Chemistry: Chemical Kinetics Practice Questions

14 questions with answers and step-by-step solutions. Tap any question to see the full worked solution.

Q1.
$Which of the following units is correct for the rate constant of a zero order reaction?$
Easy
Q2.
$In the Arrhenius equation, what does the term A represent?$
Easy
Q3.
$F or a r e a c t i o n, t h e a c t i v a t i o n e n er g y i sz er o . W ha t i s t h e v a l u eo f t h er a t eco n s t an t a t 300 K i f t h e f r e q u e n cy f a c t or i s 1 0^{1} 0 p er seco n d ?$
Easy
Q4.
$The rate law for a reaction A + B yields products is given by rate = k[A][B]. What is the overall order of the reaction?$
Easy
Q5.
$For a reaction 2A + B goes to C, the rate law is rate = k[A][B]. If the concentration of A is doubled and B is halved, the rate of reaction will:$
Medium
Q6.
$A radioactive isotope decays with a half-life of 10 years. The time required for 75 percent of the sample to decay is:$
Medium
Q7.
$F or a f i r s t or d er r e a c t i o n A g oes t o p r o d u c t s, t h eco n ce n t r a t i o n o f A d ecr e a ses f r o m 0.8 M t o 0.2 M in 20 min u t es . T h er a t eco n s t an t o f t h er e a c t i o ninmi n^{-} 1 i s$
Medium
Q8.
$For a zero order reaction, the time taken for 50 percent completion is 100 seconds. The time taken for 100 percent completion is:$
Medium
Q9.
$The activation energy of a reaction is 90 kJ/mol. If the temperature is increased from 300 K to 310 K, the rate constant increases by a factor of:$
Medium
Q10.
$For a complex reaction A + B -> C + D, the mechanism is proposed as: (1) A + B <=> I (fast equilibrium, K), (2) I -> C + E (slow, k2), (3) E + B -> D (fast, k3)$
Hard
Q11.
$For a parallel reaction A -> B (k1) and A -> C (k2), if k1 = 2k2, what is the percentage of B formed at any time t?$
Hard
Q12.
$A radioactive isotope decays with a half-life of 100 years. How many years will it take for 87.5 percent of the sample to decay?$
Hard
Q13.
$A first order reaction A -> B has a rate constant k. If the reaction is carried out in a solvent where the activation energy is lowered by 10 kJ/mol at 300 K, b$
Hard
Q14.
$For a reaction 2A + B -> C, the rate law is found to be Rate = k[A][B]. If the concentration of A is doubled and B is halved, what happens to the rate?$
Hard

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