Environmental Issues – CBSE Class 12 Previous Year Questions (2023–2026)
All 2 CBSE Class 12 previous-year questions from Environmental Issues (Biology), 2023–2026, taken from 2 papers. Practise them together in one test with the official marking and answer key, then review every answer.
▶ Practise all 2 questionsAll CBSE Class 12 chapters
Environmental Issues questions by paper
| Paper | Questions |
|---|---|
| CBSE Class 12 Biology SQP 2026-27 | 1 |
| CBSE Class 12 Biology Board 2023 (Set 57/1/1) | 1 |
Sample questions
- CBSE Class 12 Biology SQP 2026-27
Assertion A The primary goal of sewage treatment is to eliminate all organic matter from the effluent Reason High BOD indicates a low level of organic matter in the… - CBSE Class 12 Biology Board 2023 (Set 57/1/1)
The graph plotted below is based on the data collected by biology students with respect to the levels of oxygen at the specific points in the river flowing outside…
Question text shown from the scanned paper; open the test to see each question exactly as printed.
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