Definition and Types of Redox Reactions
Redox reactions are chemical processes involving oxidation and reduction, defined either by electron transfer or changes in oxidation number, and include special types like displacement and disproportionation reactions.
Why this shows up in the exam
NEET and JEE often test your ability to identify, classify, and understand the fundamental nature of redox processes.
How NEET tests this
Practise it
These are real questions from past NEET papers that test this exact idea.
The correct option for a redox couple is (a) both are oxidised forms involving same element (b) both are reduced forms involving same element (c) both the reduced and oxidized forms involve same element (d) cathode and anode together.
Push further
More challenging24 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.
Which of the following pairs represents a valid redox couple?
More from Redox Reactions
Oxidation Number and Oxidation State Calculation
Calculating oxidation numbers and states in elements, compounds, ions, and special cases is essential for understanding redox changes and reaction mechanisms.
Oxidizing and Reducing Agents: Properties and Identification
Oxidizing and reducing agents are substances that accept or donate electrons, and their identification and comparative strengths are key to predicting reaction outcomes.
Balancing Redox Equations
Redox equations must be balanced using methods like the oxidation number method or the half-reaction method to ensure mass and charge conservation.