IIT JEE Questions And Answers :: Rates Of Chemical Reactions And Chemical Kinetics: part1



IIT JEE : Rates Of Chemical Reactions And Chemical Kinetics QUESTIONS AND ANSWERS :: part1 : 26 to 30

Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :

26.Half-life of a first order reaction is 35 min. The time required to reduce its concentration to 12.5% is

125 min
105 min
50 min
70 min

27.According to collision theory rate of reaction is equal to

no. of collisions between the reactant molecules
no. of effective collisions
no. of collisions
concentration of reactants

28.Which of the following statements is incorrect?

In an endothermic reaction, the activation energy of the reverse reaction is lower than that of the forward reaction
Half-life period of a first order reaction is independent of the final concentration
Reaction with higher activation energy has higher rate constant
The catalyst does not affect the equilibrium of a reaction

29.The half-life period for the first order reaction is

half of the rate constant
same for all reactions
independent of initial concentration
directly proportional to the initial concentration of reacts

More Rates Of Chemical Reactions And Chemical Kinetics QUESTIONS AND ANSWERS available in next pages

    Health is the greatest gift, contentment is the greatest wealth -Buddha
If you are not willing to risk the usual you will have to settle for the ordinary- Jim Rohn