NEET UG · Chemistry · Class 11
Environmental Chemistry: NEET previous year questions
This chapter is not in the NEET UG 2026 syllabus. It had 6 questions from 2017 to 2023; they are kept here for reference.
- Asked in 10 years
- 6
- 6 of 10 papers
- 10-year average
- 0.6
- a paper · 0.0 since 2024 -0.8
- Typical range
- 0–1
- questions a paper; fewest 0, most 1
- 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- Recall67%
- Match the lists17%
- Two statements17%
Most common asks: identify oxide not a pollutant (1); statement i/ii on environmental pollution (1); identify factors enhancing pollution (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
- 0.3%
- ten-year average
- Busiest year
- 2017
- 1 questions
- Year to year
- Steady
- varies by about 0.5 questions
- Long-run direction
- -0.11
- questions per paper, per year
- Easy questions
- 33%
- 83% 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
- 2020
- 20211
- 20221
- 20231
- 2024
- 2025
- 2026
- Easy
- Medium
- Hard
What it asks you to do
SHARE OF QUESTIONS- Recall100%
Topics
What repeats, topic by topic
Questions per topic in each year's paper. Topics that come every year are worth learning first.
- Environmental Chemistry · Every year6111111
| Topic | 2017 | ’18 | 2019 | ’20 | 2021 | ’22 | 2023 | ’24 | 2025 | ’26 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Environmental ChemistryEvery year | 1 | 1 | 1 | · | 1 | 1 | 1 | · | · | · | 6 |
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
- 1 · 17%
- 1 · 17%
- 1 · 17%
- 1 · 17%
- 1 · 17%
- 1 · 17%
Squares are the ten papers, 2017 to 2026; darker means more questions. Share is of the level above.
Every question
Environmental Chemistry questions, year by year
The opening words of each question as it appeared in the official paper.
NEET 20231 question
- Q90Given below are two statements : Statement I : The nutrient deficient water bodies lead to eutrophication. Statement II : Eutrophication…Two statements
NEET 20221 question
- Q94The pollution due to oxides of sulphur gets enhanced due to the presence of : (a) particulate matter (b) ozone (c) hydrocarbons (d)…Other
NEET 20211 question
- Q86Match List - I with List - II. List - I | List - II (a) | (i) Acid rain (b)…Match the lists
NEET 20191 question
- Q52Among the following, the one that is not a green house gas is :One-line MCQ
NEET 20181 question
- Q59Which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due to natural and human activity ?One-line MCQ
NEET 20171 question
- Q71Which of the following is a sink for CO ?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.