Zero Order Reactions
Study the characteristics, integrated rate law, and half-life of zero order reactions, including graphical and mathematical aspects.
Why this shows up in the exam
You may be asked to recognize, analyze, and calculate parameters for zero order reactions in both NEET and JEE.
How NEET tests this
Practise it
These are real questions from past NEET papers that test this exact idea.
For a certain reaction R → Product, the plot of concentration [R] vs time has a negative slope as shown. The order of reaction is : [Image of a graph with [R] concentration on y-axis and time on x-axis, showing a straight line with a negative slope, starting from [R₀]. The slope is labeled k = -slope.]
Push further
More challenging8 harder questions built from the past papers above — a step up in difficulty, with distractors designed so you can't get there by elimination. Written and checked by our reviewers, not from a real paper.
For a reaction A → Products, the concentration of A decreases linearly with time. If the initial concentration of A is 1.2 M and after 20 minutes it becomes 0.6 M, what will be the concentration of A after 30 minutes?
More from Chemical Kinetics
First Order Reactions
Master the integrated rate law, half-life, percent completion, and graphical analysis for first order reactions.
Arrhenius Equation and Activation Energy
Understand the Arrhenius equation, how temperature affects rate constants, and how to calculate and interpret activation energy graphically and mathematically.
Rate Law and Order of Reaction
Understand how to write the rate law, determine the order of a reaction, and interpret the effect of concentration changes on reaction rate.
Rate of Reaction and Stoichiometry
Learn how the rate of a chemical reaction is defined, measured, and related to the stoichiometric coefficients of reactants and products.
Energy Profile Diagrams and Reaction Energetics
Interpret potential energy diagrams for exothermic and endothermic reactions, and relate activation energy to enthalpy changes.
Catalysis and Enzymes
Examine how catalysts, including enzymes, affect reaction rates and activation energy, and their role in biochemical reactions.