NEET UG · Chemistry · Class 12
Surface Chemistry: NEET previous year questions
This chapter is not in the NEET UG 2026 syllabus. It had 8 questions from 2017 to 2023; they are kept here for reference.
- Asked in 10 years
- 8
- 7 of 10 papers
- 10-year average
- 0.8
- a paper · 0.0 since 2024 -1.1
- Typical range
- 0–1
- questions a paper; fewest 0, most 2
- Syllabus
- Dropped
- NEET UG 2026 syllabus
- Typical range (fact)
- 10-year average (fact)
- Weighted estimate (model)
Typical range: questions per paper in the middle eight of the ten papers, leaving out the single highest and lowest year (about the 10th to 90th percentile), each paper scaled to 180 questions. The ten-year average and the range are historical fact. The weighted estimate is a model: each paper's share, with recent papers counting more (half-life three years), and dropped syllabus removed. It is a guide to effort, not a forecast.
Questions per year
Kind of question
SHARE OF 10 YEARS- Recall50%
- Concept25%
- Application13%
- Two statements13%
Most common asks: property determining coagulating power (1); property determined by quantity (1); identify example of catalysis type (1).
Profile
This chapter in numbers
Where it ranks, how steady it is, and what it costs to study.
- Syllabus
- Dropped
- not in NEET UG 2026
- Last asked
- 2023
- Share of the paper
- 0.4%
- ten-year average
- Busiest year
- 2023
- 2 questions
- Year to year
- Steady
- varies by about 0.6 questions
- Long-run direction
- -0.11
- questions per paper, per year
- Easy questions
- 75%
- 27% of ideas rated hard
- With a figure
- 0%
- graph, diagram or structure
- Foundation for others
- 50%
- of its ideas are used in other chapters
Difficulty, year by year
Each question rated easy, medium or hard against NCERT.
- 20171
- 20181
- 20191
- 20201
- 20211
- 20221
- 20232
- 2024
- 2025
- 2026
- Easy
- Medium
- Hard
What it asks you to do
SHARE OF QUESTIONS- Recall63%
- Concept25%
- Application13%
Topics
What repeats, topic by topic
Questions per topic in each year's paper. Topics that come every year are worth learning first.
- Surface Chemistry and Colloids · Every year81111112
| Topic | 2017 | ’18 | 2019 | ’20 | 2021 | ’22 | 2023 | ’24 | 2025 | ’26 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Surface Chemistry and ColloidsEvery year | 1 | 1 | 1 | 1 | 1 | 1 | 2 | · | · | · | 8 |
Drill down
Topic, idea, question
Open a topic to see every idea NEET tested inside it, then open an idea to read the questions. Each row shows its ten papers.
6 ideas inside
- Repeated2 · 25%
- Repeated2 · 25%
- 1 · 13%
- 1 · 13%
- 1 · 13%
- 1 · 13%
Squares are the ten papers, 2017 to 2026; darker means more questions. Share is of the level above.
Ideas
The exact ideas NEET has asked
Inside the topics, 6 different ideas were tested. These came more than once, or are new since 2024.
- Homogeneous and Heterogeneous Catalysis2×
identify example of catalysis type
- Coagulation and the Hardy-Schulze Rule2×
property determining coagulating power
Every question
Surface Chemistry questions, year by year
The opening words of each question as it appeared in the official paper.
NEET 20232 questions
- Q66Which one is an example of heterogenous catalysis?One-line MCQ
- Q96Pumice stone is an example of -One-line MCQ
NEET 20221 question
- Q59Given below are two statements : Statement I : In the coagulation of a negative sol, the flocculating power of the three given ions is in…Two statements
NEET 20211 question
- Q61The right option for the statement “Tyndall effect is exhibited by”, is :One-line MCQ
NEET 20201 question
- Q128Measuring Zeta potential is useful in determining which property of colloidal solution ?One-line MCQ
NEET 20191 question
- Q72Which mixture of the solutions will lead to the formation of negatively charged colloidal sol. ?One-line MCQ
NEET 20181 question
- Q75On which of the following properties does the coagulating power of an ion depend ?One-line MCQ
NEET 20171 question
- Q58Which one of the following statements is not correct ?One-line MCQ
Questions from the official NEET UG papers published by NTA (CBSE before 2019). Topic and idea tags, counts and notes are Lumi’s.