Chemical Kinetics: Class 12 Chemistry (Bihar Board) important questions and practice
Chemical Kinetics is chapter 3 of 10 in Bihar Board Class 12 Chemistry. Below are the topics the paper draws from, the question types that come up again and again, and a free practice test on this chapter alone.
Topics in this chapter
- Rate of reaction: average and instantaneous rate, factors affecting rate
- Rate law, rate constant, order and molecularity
- Integrated rate equations for zero and first order reactions
- Half-life of zero and first order reactions
- Pseudo first order reactions
- Temperature dependence: Arrhenius equation and activation energy
- Collision theory
What examiners usually ask
- Derive the integrated rate equation for a first order reaction and show that its half-life is independent of initial concentration
- A first order reaction is 75 percent complete in 60 minutes; find its half-life
- The rate constant of a reaction doubles when the temperature rises from 300 K to 310 K; calculate the activation energy
Exam tip
Carry the units of k (mol/L/s for zero order, 1/s for first order) in every answer because they are marked, and write the Arrhenius equation in the log form log(k2/k1) = Ea/2.303R x (T2-T1)/(T1T2) before substituting; the first-order derivation with t1/2 = 0.693/k is a yearly question.
Chemical Kinetics on other boards and exams
Frequently asked questions
What are the important questions from Chemical Kinetics for Bihar Board Class 12?
The question types listed above repeat most often in Bihar Board Class 12 Chemistry papers for this chapter. Practise them with the chapter test and then attempt them inside a full previous-year paper under time.
Is Chemical Kinetics in the Bihar Board Class 12 Chemistry syllabus?
Yes. Chemical Kinetics is part of the current Bihar Board Class 12 Chemistry syllabus, as listed on this site from the prescribed textbook.
Can I practise Chemical Kinetics MCQs in Hindi?
Yes. The chapter test and explanations are available in Hindi and English, with an AI doubt solver for any question.