25 JEE Main 2025 Chemical Kinetics previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2025 previous-year questions from the Chemical Kinetics chapter of Chemistry. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Chemical Kinetics chapter hub.
In a reaction A+B → C, initial concentrations of A and B are related as [A]₀=8[B]₀. The half lives of A and B are 10 mi…
Consider the given figure and choose the correct option :
The reaction A₂+B₂ → 2 AB follows the mechanism The overall order of the reaction is :
A → ~B The molecule A changes into its isomeric form B by following a first order kinetics at a temperature of 1000 K .…
Which of the following graphs most appropriately represents a zero order reaction ?
Consider an elementary reaction A(g)+B(g) → C(g)+D(g) If the volume of reaction mixture is suddenly reduced to (1)/(3)…
Rate law for a reaction between A and B is given by R=k[~A]ⁿ[~B]m If concentration of A is doubled and concentration of…
Consider a complex reaction taking place in three steps with rate constants k₁, k₂ and k₃ respectively. The overall rat…
Half life of zero order reaction A → product is 1 hour, when initial concentration of reaction is 2.0 ~mol ~L ~L⁻¹. The…
For A₂+B₂ 2 AB Ea for forward and backward reaction are 180 and 200 ~kJ ~mol⁻¹ respectively If catalyst lowers Ea for b…
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