NEET UG · Chemistry · Electrochemistry

Electrolytic Conductance and Electrolysis: NEET previous year questions

8 questions in ten years of NEET, in 6 of 10 papers. Pattern: Every year. Here is how it is asked and which ideas come back.

Asked in 10 years: 8; about 0.8 per paper
Years asked: 6/10; last asked 2026
Chance of a question next paper: 64%; historical rate, how we compute it
Weighted estimate: 0.9; model; history: 0.8 a paper on average, typically 0–2

Key findings

01
Asked in 6 of 10 papers, 8 questions in all: #98 of 204 topics by ten-year total. It comes back every 1.2 years on average.
02
75% of its questions since 2018 tested an idea never asked before; none repeated an idea from the year before.
03
The most repeated idea is Degree of Dissociation from Conductivity, asked 2 times (2021, 2025), usually as “numerical”.
04
NEET has asked 0 of the 6 ideas in this topic; 0 have never been asked, directly or indirectly.
05
Mostly asked as numerical (88%); 50% easy, 0% hard.

Questions per year

Up to 2023: 0.7; per paper
Since 2024: 1.0; 0.3
Usual gap: 1.2 yrs; between papers asking it
Swing: ±0.7; questions, year to year

How it is asked

Difficulty, format and skill

Across all 8 questions on Electrolytic Conductance and Electrolysis since 2017.

Difficulty

QUESTIONS

Easy4 · 50%
Medium4 · 50%
Hard0 · 0%

Format

Numerical · 7 Q88%
One-line MCQ · 1 Q13%

Skill tested

Calculation · 6 Q75%
Multi-step · 1 Q13%
Recall · 1 Q13%

Repeats

New idea, or one asked before?

Each column is a paper. Blue questions tested an idea NEET had not asked before; navy ones went back to an idea from an earlier paper. 2017 is the first paper, so everything in it counts as new.

’17’18’19’20’21’22’23’24’25’26

Idea asked for the first time
Idea asked in an earlier paper

Coverage of the topic

NEET has asked 0 of the 6 ideas in this topic. 0 have never been asked yet.

Asked directly0 · 0%
Touched inside another question6 · 100%
Never asked0 · 0%

Ideas come from Lumi’s syllabus map of NCERT. A never-asked idea is not a safe skip: most new questions come from exactly these.

Drill down

Idea, year, question

Every idea NEET tested in this topic, with its ten papers. Open one to read the questions.

ideaAskedShareYears’17’18’19’20’21’22’23’24’25’26

Repeated2 · 25%25%2/10
- 2025 · Q61
  If the molar conductivity ( $\Lambda_m$ ) of a 0.050 mol L $^{-1}$ solution of a monobasic weak acid is 90 S cm $^2$ mol $^{-1}$ , its extent…
  mediumNumerical
- 2021 · Q97
  The molar conductivity of 0.007 M acetic acid is 20 S $\mathrm{cm^{2}\ mol^{-1}}$ . What is the dissociation constant of acetic acid ?…
  mediumNumericalNew idea
Repeated2 · 25%25%2/10
1 · 13%13%1/10
1 · 13%13%1/10
1 · 13%13%1/10
1 · 13%13%1/10

Squares are the ten papers, 2017 to 2026; darker means more questions. Share is of the level above.

Ideas

Every idea inside this topic

6 different ideas were tested; 2 came more than once.

Degree of Dissociation from Conductivity2×
numerical
Numerical · 6% next
Faraday's Laws of Electrolysis2×
numerical
Numerical · 6% next
Variation of Molar Conductivity with Concentration1×
numerical
Numerical · 6% next
Conductivity and Cell Constant1×
numerical
Numerical · 4% next
Kohlrausch's Law1×
numerical
Numerical · 4% next
Products of Electrolysis1×
predict product at electrode
One-line MCQ · 4% next

Idea	Times	Format	Chance next	Foundation for
Degree of Dissociation from Conductivitynumerical	2	NumericalCalculation	6%	–
Faraday's Laws of Electrolysisnumerical	2	NumericalCalculation	6%	–
Variation of Molar Conductivity with Concentrationnumerical	1	NumericalCalculation	6%	–
Conductivity and Cell Constantnumerical	1	NumericalCalculation	4%	–
Kohlrausch's Lawnumerical	1	NumericalCalculation	4%	–
Products of Electrolysispredict product at electrode	1	One-line MCQRecall	4%	–

Chance next is the historical rate at which an idea with this record came back in the following paper. It is low for every idea, which is why learning the topic beats memorising past questions. All repeated ideas

Every question

Electrolytic Conductance and Electrolysis questions, year by year

The opening words of each question as it appeared in the official paper, with the idea it tested.

NEET 20261 question

Q62
For a salt XY, which is a strong electrolyte, the plot of $\Lambda_m$ versus $\sqrt{c}$ has a slope of $-90.0$ S cm $^2$ mol $^{-3/2}$ …
Idea: Variation of Molar Conductivity with Concentration
New ideaMediumNumerical

NEET 20251 question

Q61
If the molar conductivity ( $\Lambda_m$ ) of a 0.050 mol L $^{-1}$ solution of a monobasic weak acid is 90 S cm $^2$ mol $^{-1}$ , its extent…
Idea: Degree of Dissociation from Conductivity
MediumNumerical

NEET 20241 question

Q100
Mass in grams of copper deposited by passing 9.6487 A current through a voltmeter containing copper sulphate solution for 100 seconds is:…
Idea: Faraday's Laws of Electrolysis
MediumNumerical

NEET 20231 question

Q79
The conductivity of centimolar solution of KCl at 25°C is 0.0210 ohm $^{-1}$ cm $^{-1}$ and the resistance of the cell containing the…
Idea: Conductivity and Cell Constant
New ideaEasyNumerical

NEET 20212 questions

Q62
The molar conductance of NaCl, HCl and $\mathrm{CH_3COONa}$ at infinite dilution are 126.45, 426.16 and 91.0 S $\mathrm{cm^{2}\ mol^{-1}}$ …
Idea: Kohlrausch's Law
New ideaEasyNumerical
Q97
The molar conductivity of 0.007 M acetic acid is 20 S $\mathrm{cm^{2}\ mol^{-1}}$ . What is the dissociation constant of acetic acid ?…
Idea: Degree of Dissociation from Conductivity
New ideaMediumNumerical

NEET 20202 questions

Q99
On electrolysis of dil.sulphuric acid using Platinum (Pt) electrode, the product obtained at anode will be :
Idea: Products of Electrolysis
New ideaEasyOne-line MCQ
Q106
The number of Faradays(F) required to produce 20 g of calcium from molten $\mathrm{CaCl_2}$ (Atomic mass of Ca = 40 g mol $^{-1}$ ) is :
Idea: Faraday's Laws of Electrolysis
New ideaEasyNumerical

Questions from the official NEET UG papers published by NTA (CBSE before 2019). Topic and idea tags, counts and notes are Lumi’s.