Explore: All CBSE Class 10 chapters · CBSE Class 10 Science PYQs · CBSE Class 10 hub · Syllabus & pattern · Class 10 2026
Answer first
Our Environment PYQs (previous year questions) for CBSE Class 10: Our Environment (Science) had 19 questions across the 40 official CBSE Class 10 papers we tagged (2016–2026), and appeared in 10 of them. Asked in 10 of 10 years. The concepts asked in the most papers: Food Chains, Biological Magnification, Waste Management.
Year-wise question count
Asked in 10 of 10 years.
Most-asked concepts
Sorted by the number of papers a concept appeared in.
| Concept | Questions | Papers | Years |
|---|---|---|---|
| Food Chains | 6 | 5 | 2026, 2025, 2024, 2022, 2017 |
| Biological Magnification | 3 | 3 | 2024, 2023, 2020 |
| Waste Management | 3 | 3 | 2019, 2018, 2016 |
| Ozone Layer | 2 | 2 | 2025, 2022 |
| Biodegradable Waste | 1 | 1 | 2026 |
| Ecosystem | 1 | 1 | 2023 |
| Energy Flow | 1 | 1 | 2025 |
| Harmful Effects of Chemicals | 1 | 1 | 2025 |
| Ozone Depletion | 1 | 1 | 2016 |
How to practise Our Environment PYQs
- Start with the concepts at the top of the table. They have come back the most.
- Solve one year’s Our Environment questions from the official PDF against the clock, then check the answer listed below.
- Log every miss as a concept gap, a calculation slip or a misread. Each needs a different fix.
- Once a concept is clean in two papers, move to the next. Then sit a full paper from the year pages.
Questions by year
Each line gives the question number and paper, type, concept, our one-line summary, with a link to the official PDF.
CBSE Class 102026
CBSE Class 102025
- Q.15 (Science (31/1/1)) · MCQ · Food Chains: Groups that do not form a valid food chain PDF
- Q.16 (Science (31/1/1)) · MCQ · Energy Flow: Percentage of solar energy not converted to food by plants PDF
- Q.20 (Science (31/1/1)) · Assertion-Reason · Ozone Layer: Assertion-reason on ozone drop in 1980s and ozone formation PDF
- Q.26 (Science (31/1/1)) · Short answer · Harmful Effects of Chemicals: Justify that excess pesticides harm the environment PDF
CBSE Class 102024
- Q.15 (Science (31/1/1)) · MCQ · Food Chains: Food chain with given type of second trophic level organisms PDF
- Q.18 (Science (31/1/1)) · Assertion-Reason · Biological Magnification: Assertion-reason on chemical accumulation at top trophic level PDF
- Q.33 (Science (31/1/1)) · Short answer · Food Chains: Effect of removing second trophic level in a food chain vs web PDF
CBSE Class 102023
CBSE Class 102022
CBSE Class 102020
- Q.4 (Science (31/1/1)) · Case-based · Biological Magnification: Case on pesticide accumulation along food chains PDF
CBSE Class 102019
- Q.14 (Science (31/1/1)) · Short answer · Waste Management: Three ways to reduce the waste disposal problem PDF
CBSE Class 102018
- Q.14 (Science (31/1)) · Short answer · Waste Management: Garbage case: managing and reducing waste, values shown PDF
CBSE Class 102017
- Q.3 (Science (31/1)) · Very short answer · Food Chains: Energy at producer level given 100 J reaches the lion PDF
CBSE Class 102016
Other Science chapters
- Chemical Reactions and Equations PYQs
- Acids, Bases and Salts PYQs
- Metals and Non-metals PYQs
- Carbon and its Compounds PYQs
- Periodic Classification of Elements PYQs
- Life Processes PYQs
- Control and Coordination PYQs
- How do Organisms Reproduce PYQs
- Heredity and Evolution PYQs
- Light: Reflection and Refraction PYQs
- The Human Eye and the Colourful World PYQs
- Electricity PYQs
- Magnetic Effects of Electric Current PYQs
- Sources of Energy PYQs
- Sustainable Management of Natural Resources PYQs
FAQ
How many Our Environment questions come in CBSE Class 10?
In the official papers we tagged: 2 in 2026, 4 in 2025, 3 in 2024, 2 in 2023, 2 in 2022, 1 in 2020, 1 in 2019, 1 in 2018, 1 in 2017 and 2 in 2016. That is 19 questions in all, about 6% of Science.
Which Our Environment topics repeat in CBSE Class 10?
Asked in the most papers: Food Chains, Biological Magnification, Waste Management. The concept table lists every one with its count.
Are these official CBSE Class 10 questions?
Yes. Every question is from an official CBSE Class 10 paper hosted on our year pages. The one-line summaries are ours; open the PDF linked beside each question for the full text.