Electrochemistry is one of the most scoring chapters in NEET Chemistry. In most years it carries about 1 to 2 questions, which is roughly 5% of the Chemistry section. The questions are usually short and numerical, so a good grip on a few formulas can fetch you easy marks in NEET 2026.
Specifically from the syllabus which include concepts like Electrochemical cells - Electrolytic and Galvanic cells, different types of electrodes, electrode potentials including standard electrode potential, half - cell and cell reactions, emf of a Galvanic cell and its measurement: Nernst equation and its applications; Relationship between cell potential and Gibbs' energy change: Dry cell and lead accumulator; Fuel cells.
| Additional Resources for Preparation: | |
|---|---|
| Electrochemistry | NCERT Solutions for Class 12 Chemistry Chapter 3 |
| Electrochemistry MCQs | Electrochemistry Questions |
Electrochemistry Previous Year Questions with detailed solutions
Question 1:
The conductivity of the centimolar solution of KCI at 25°C is 0.0210 ohm-1cm-1 and the resistance of the cell containing the solution at 25°C is 60 ohm. The value of the cell constant is :
- 3.28 cm-1
- 1.26 cm-1
- 3.34 cm-1
- 1.34 cm-1
Question 2:
Given below are two statements labeled Assertion A and the labeled as Reason R :
Assertion A: In the equation ΔrG=−nFEcell Δr ,G=−nFE cell value of
ΔrGΔr ,G depends on n.
Reasons R: ECell is an intensive property and ΔrGΔr , G is an extensive property.
In the light of the above statements, choose the correct answer from the options below :
- Both A and R are true and R is the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
- Both A and R are true and R is the correct explanation of A.
Question 3:
At 298 K, the standard electrode potentials of Cu2+/Cu, Zn2+/Zn, Fe2+/Fe and Ag+/Ag are 0.34 V, - 0.76 V, - 0.44 V and 0.80 V, respectively.
On the basis of standard electrode potential, predict which of the following reaction cannot occur?
- CuSO4(aq) + Zn(s) → ZnSO4(aq) + Cu(s)
- CuSO4(aq) + Fe(s) → FeSO4(aq) + Cu(s)
- FeSO4(aq) + Zn(s) → ZnSO4(aq) + Fe(s)
- 2CuSO4(aq) + 2Ag(s) → 2Cu(s) + Ag2SO4(aq)
Question 4:
Given below are half-cell reactions:
- Yes, because E°cell = +0.287V
- No, because E°cell = -0.287V
- Yes, because E°cell = +2.733 V
- No, because E°cell = -2.733 V
Question 5 :
Find the emf of the cell
Ni(s) + 2 Ag+ (0.001 M) → Ni2+ (0.001 M) + 2Ag(s)
- 1.0385 V
- 1.385 V
- 0.9615 V
- 1.05 V
Question 6:
On electrolysis of dil.sulphuric acid using Platinum (Pt) electrode, the product obtained at anode will be:
- Hydrogen gas
- Oxygen gas
- H2S
- SO2
Question 7:
In which case change in entropy is negative? (1)(2) (3) (4)
- Evaporation of water
- Expansion of a gas at constant temperature
- Sublimation of solid to gas
- 2H(g)→H2(g)
Question 8:
For a cell involving one electron ECell = 0.59 V at 298 K, the equilibrium constant for the cell reaction is ;
Question 9:
Extraction of gold and silver involves leaching with CN– ion. Silver is later recovered by
- Liquation
- Distillation
- Zone refining
- Displacement with Zn
Question 10:
Zinc can be coated on iron to produce galvanized iron but the reverse is not possible. It is because
- zinc is lighter than iron
- zinc has lower melting point than iron
- zinc has lower negative electrode potential than iron
- zinc has higher negative electrode potential than iron
More NEET Electrochemistry Practice Questions (with Answers)
Try these three extra questions on the most tested ideas: Faraday's law, conductivity, and the mole-electron relationship. The correct option and a short solution are given right below each one.
Question 11: The charge required to deposit 0.9 g of aluminium from molten AlCl3 is (Al = 27, 1 F = 96500 C):
- 0.1 F
- 0.3 F
- 0.9 F
- 3 F
Answer: 0.1 F. Moles of Al = 0.9 / 27 = 0.0333 mol. The reaction Al3+ + 3e- gives Al needs 3 F per mole of Al, so charge = 0.0333 x 3 = 0.1 F.
Question 12: The molar conductivity of a 0.5 mol L-1 solution of an electrolyte is 200 S cm2 mol-1. The conductivity of the solution is:
- 0.1 S cm-1
- 0.2 S cm-1
- 100 S cm-1
- 400 S cm-1
Answer: 0.1 S cm-1. Conductivity = (molar conductivity x concentration) / 1000 = (200 x 0.5) / 1000 = 0.1 S cm-1.
Question 13: The number of electrons that carry a total charge of 9650 coulombs is (1 F = 96500 C, NA = 6.022 x 1023):
- 6.022 x 1022
- 6.022 x 1023
- 6.022 x 1020
- 9.65 x 1023
Answer: 6.022 x 1022. Moles of electrons = 9650 / 96500 = 0.1 mol. Number of electrons = 0.1 x 6.022 x 1023 = 6.022 x 1022.
Electrochemistry NEET 2026 Video Revision (One Shot)
Revise the complete chapter quickly with this one shot video. It covers all the key concepts, shortcut tricks, and previous year questions that are useful for NEET 2026.
Source: Competition Wallah
NEET 2026 Mock Tests, Sample Papers and Practice Resources
After solving the previous year questions, test yourself with full length mock tests and chapter wise sample papers. All of these Collegedunia resources are free and help you build speed and accuracy for NEET 2026.
| Resource | Link |
|---|---|
| NEET Mock Test (Free, Chapter-wise) | Attempt Now |
| NEET Chemistry Sample Papers | Download PDF |
| NEET Practice Papers | Check Here |
| NEET Chemistry Question Papers (Code-wise) | Check Here |
| NEET Paper Analysis (10 Years) | Check Here |
| NEET Chemistry Syllabus and Weightage | Check Here |
| NEET Rank and College Predictor | Predict Now |
NEET Chemistry Exam Pattern 2026: Marking Scheme
Candidates get 4 marks for every correct answer and 1 mark is deducted for every wrong answer. Unattempted questions get zero marks. From 2025 onwards, the optional Section B has been removed, so all questions are now compulsory. Do not fill more than one option in the OMR sheet, as such a question is marked wrong and you lose marks.
The full NEET 2026 paper has 180 questions for 720 marks and has to be solved in 3 hours. The subject wise split is given below.
| Subject | No. of Questions | Marks |
|---|---|---|
| Physics | 45 | 180 |
| Chemistry | 45 | 180 |
| Botany | 45 | 180 |
| Zoology | 45 | 180 |
| Total | 180 | 720 |
Important Topics for NEET Chemistry
NEET chemistry syllabus can be divided into 3 parts i.e Organic, Inorganic, and Physical Chemistry. The weightage of questions asked from each section is almost the same every year.
- NEET Physical Chemistry: It’s the numerical section of NEET Chemistry.
- NEET Organic Chemistry: From this section, you must focus on memorizing the names of various compounds that constitute reagents, subtracts, etc.
- NEET Inorganic Chemistry: This section is considered the easiest section of NEET Chemistry.
NEET Chemistry Chapter-wise Weightage 2026
Based on the questions asked in previous years, here is the approximate weightage of the important NEET Chemistry chapters. Electrochemistry sits in the high scoring Physical Chemistry group, so a focused revision pays off.
| Chapter | Approx. Questions | Approx. Weightage |
|---|---|---|
| Some Basic Concepts of Chemistry | 1 to 2 | 3% |
| Chemical Bonding and Molecular Structure | 2 to 3 | 6% |
| Thermodynamics | 1 to 2 | 4% |
| Equilibrium | 2 to 3 | 6% |
| Electrochemistry | 1 to 2 | 5% |
| Chemical Kinetics | 1 to 2 | 3% |
| Solutions | 1 to 2 | 4% |
| p-Block Elements | 3 to 4 | 8% |
| Coordination Compounds | 2 to 3 | 6% |
| d- and f-Block Elements | 1 to 2 | 3% |
| Haloalkanes and Haloarenes | 1 to 2 | 4% |
| Aldehydes, Ketones and Carboxylic Acids | 2 to 3 | 6% |
| Amines | 1 to 2 | 3% |
| Biomolecules | 1 to 2 | 3% |
Electrochemistry: Recent NEET Trend and Difficulty
The table below shows how Electrochemistry has appeared in recent NEET papers. These numbers follow the overall paper trend and can change a little from year to year.
| Year | Questions from Electrochemistry | Difficulty Level |
|---|---|---|
| NEET 2025 | 1 to 2 | Easy to Moderate |
| NEET 2024 | 1 to 2 | Moderate |
| NEET 2023 | 1 | Easy |
| NEET 2022 | 1 to 2 | Moderate |
NEET Previous Year Question Papers: 2026 to 2017
Download the latest NEET question papers with solutions. NEET 2026 was held on May 3, 2026, and the re-exam is scheduled for June 21, 2026. The most recent papers are linked first, followed by the older sets.
| NEET Question Paper | Links |
|---|---|
| NEET 2026 Question Paper with Solutions | Check Here |
| NEET 2025 Question Paper with Solutions | Check Here |
Older NEET Question Papers (2024 to 2017):
Given below are the year-wise question paper for NEET examination:
| Previous Year Question Papers | Links |
|---|---|
| NEET Exam 2024 | Check Here |
| NEET Exam 2023 | Check Here |
| NEET Exam 2022 | Check Here |
| NEET Exam 2021 | Check Here |
| NEET Exam 2020 | Check Here |
| NEET Exam 2019 | Check Here |
| NEET Exam 2018 | Check Here |
| NEET Exam 2017 | Check Here |
NEET Sample Paper PDF Download with Answer
Students must not confuse this sample paper with the actual question paper. This is just a mock paper with answers that will help you with your exam preparation.
| Subject | Sample Paper | Sample Paper Answers |
|---|---|---|
| Physics | Download PDF | Download PDF |
| Chemistry | Download PDF | Download PDF |
| Botany | Download PDF | Download PDF |
| Zoology | Download PDF | Download PDF |
Frequently Asked Questions
Q1. What is electrochemistry, and why is it important?
Electrochemistry is a branch of chemistry that studies the generation of electricity by the process of spontaneous chemical reactions. It also deals with the applications of electrical energy to non-spontaneous chemical reactions.
- Electrochemistry is the study of the movement of electrons in oxidation and reduction reactions.
- The reaction is carried out at a polarized electrode surface.
- Each electronic plate is oxidized or reduced at a particular potential difference.
- It is used to examine the phenomena resulting from combined chemical and electrical effects..
- Batteries used in flashlights and the use of calculators are some examples of electrochemistry.
Read More:
Electrochemistry, a crucial topic for NEET, studies the relationship between chemical reactions and electricity, focusing on how chemical energy converts to electrical energy (and vice versa) through electron transfer. It's important because it explains fundamental processes like battery function, electrolysis, and corrosion, with wide applications in various fields.
Q2. What is the significance of the Nernst equation in NEET numericals?
Nernst equation is important as the concept that explains the relationship between electrode potential and the concentration of electrolyte solution is known as Nernst Equation. Nernst Equation is used to determine the cell potential of an electrochemical cell at a given temperature, pressure and reactant concentration. The cell potential of electrochemical cells can be determined with the help of the Nernst Equation even under non - standard conditions.
Q3. Which common mistakes should I avoid while solving electrochemistry numericals in NEET?
Common mistakes that should be avoided while solving electrochemistry numericals are set in a tricky way. so that to confuse the students, these don't require tough challenging calculations but they are a bit difficult to understand and apply the right formula to it. Since it's a Competitive exam, the questions will never be easy.
The advice will be to be thorough with basic concepts and formulas for numericals and manage time wisely. Don't waste more than a minute to solve each numerical question, just study well.
Q4. How can I quickly balance redox reactions in electrochemical calculations?
Redox Reactions are defined as those reactions in which oxidation and reduction occur simultaneously. Redox Reactions are accompanied by change of energy in the form of heat, light, or electricity.
- The term redox, refers to the process of “Reduction and Oxidation”. In a Redox reaction, substances that gain electrons which reduce them to a low valency state are known as oxidising agents whereas substances that lose electrons thereby oxidizing to a higher valency state are called reducing agents.
- NEET Syllabus is divided broadly into topics from Class 11th and Class 12th. Redox Reactions forms part of Class 11 Chemistry Syllabus. Redox Reactions are the base concept for Electrochemistry and usually account for about 1 question in NEET
Quick Links:
Important Topics from Redox Reactions
| Topics | Sub Topics |
| Redox Reactions | Concept of oxidation and oxidation and reduction, redox reactions oxidation number, balancing redox reactions in terms of loss and gain of electron and change in oxidation numbers. |
Q5. What is the best strategy to revise Electrochemistry for NEET in one day?
The best strategy to revise Electrochemistry for NEET is through :
Electrochemistry: Important Questions
Electrochemistry: Types, Electrolysis & Important Terms
NEET Study Notes for Electrochemistry
Things to Remember
- Electrochemistry is the branch of chemistry that studies the relationship between electric potential differences.
- It also checks for the changes that take place in the chemical reactions.
- Galvanization protects the iron from rusting.
- Redox reaction takes place with the help of external voltage.
- Conductance is defined as the process by which electric current passes through the conductor.
Q6. How many questions come from Electrochemistry in NEET 2026?
Electrochemistry usually carries about 1 to 2 questions in NEET, which is roughly 5% of the Chemistry section. The questions are mostly numerical and direct, so it is a high scoring chapter once your formulas are clear.
Q7. Which Electrochemistry topics are most important for NEET?
The topics that are tested most often in NEET are listed below:
- Nernst equation and EMF of a cell
- Conductivity and molar conductivity, including Kohlrausch's law
- Faraday's laws of electrolysis
- Standard electrode potential and cell potential
- Batteries, fuel cells, and corrosion
Q8. What are Faraday's first and second laws of electrolysis?
Faraday's first law states that the mass of a substance deposited at an electrode is directly proportional to the quantity of charge passed through the cell. Faraday's second law states that when the same charge is passed through different electrolytes, the masses of the substances deposited are proportional to their equivalent masses.
Q9. Where can I get NEET Electrochemistry questions and mock tests?
You can practice for free with the Collegedunia NEET mock tests and practice papers. For full papers with answers, use the NEET Chemistry question papers with solutions.
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