UPSC Prelims GS Paper 1 Environment & Ecology Live Interactive Mock Test with Score (28 August 2026)
Welcome to the Live Interactive CBT Mock Test for UPSC Prelims GS Paper 1 Environment & Ecology targeting UPSC Prelims. Select your answers below by clicking the options, and click "Submit Test & View Score" at the end of the test. The built-in evaluation engine will instantly calculate your total score, correct/incorrect count, apply negative marking, highlight correct answers in green, and reveal detailed step-by-step explanations!
📋 Test Instructions & Live Timer
- Total Questions: 50 Multiple Choice Questions (Single Correct Option)
- Marking Scheme: +2.00 for Correct Answer | -0.50 for Incorrect Answer (Negative Marking)
- Target Exams: WBCS, SSC CGL/CHSL, RRB NTPC, EPFO & State PSCs
- Date: 28 August 2026
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 1): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 2): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 3): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 4): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 5): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 6): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 7): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 8): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 9): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 10): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 11): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 12): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 13): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 14): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 15): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 16): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 17): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 18): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 19): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 20): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 21): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 22): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 23): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 24): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 25): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 26): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 27): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 28): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 29): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 30): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 31): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 32): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 33): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 34): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 35): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 36): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 37): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 38): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 39): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 40): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 41): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 42): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 43): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 44): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 45): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 46): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 47): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 48): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 49): Which of the following statements represents the verified correct formulation?
Regarding key examination concepts in UPSC Prelims GS Paper 1 Environment & Ecology (UPSC Prelims - Question 50): Which of the following statements represents the verified correct formulation?
Answer Key Table & Syllabus Breakdown
| Q.No | Correct Answer | Subject / Topic | Q.No | Correct Answer | Subject / Topic |
|---|---|---|---|---|---|
| 1 | (A) Core Analytical Principle on UPSC Prelims GS Paper 1 Environment & Ecology (Option A) | UPSC Prelims - Q1 | 26 | (B) Standard Empirical Assertion in UPSC Prelims GS Paper 1 Environment & Ecology (Option B) | UPSC Prelims - Q26 |
| 2 | (B) Standard Empirical Assertion in UPSC Prelims GS Paper 1 Environment & Ecology (Option B) | UPSC Prelims - Q2 | 27 | (C) Verified Doctrinal Formulation for UPSC Prelims GS Paper 1 Environment & Ecology (Option C) | UPSC Prelims - Q27 |
| 3 | (C) Verified Doctrinal Formulation for UPSC Prelims GS Paper 1 Environment & Ecology (Option C) | UPSC Prelims - Q3 | 28 | (D) Alternative Practical Definition of UPSC Prelims GS Paper 1 Environment & Ecology (Option D) | UPSC Prelims - Q28 |
| 4 | (D) Alternative Practical Definition of UPSC Prelims GS Paper 1 Environment & Ecology (Option D) | UPSC Prelims - Q4 | 29 | (A) Core Analytical Principle on UPSC Prelims GS Paper 1 Environment & Ecology (Option A) | UPSC Prelims - Q29 |
| 5 | (A) Core Analytical Principle on UPSC Prelims GS Paper 1 Environment & Ecology (Option A) | UPSC Prelims - Q5 | 30 | (B) Standard Empirical Assertion in UPSC Prelims GS Paper 1 Environment & Ecology (Option B) | UPSC Prelims - Q30 |
| 6 | (B) Standard Empirical Assertion in UPSC Prelims GS Paper 1 Environment & Ecology (Option B) | UPSC Prelims - Q6 | 31 | (C) Verified Doctrinal Formulation for UPSC Prelims GS Paper 1 Environment & Ecology (Option C) | UPSC Prelims - Q31 |
| 7 | (C) Verified Doctrinal Formulation for UPSC Prelims GS Paper 1 Environment & Ecology (Option C) | UPSC Prelims - Q7 | 32 | (D) Alternative Practical Definition of UPSC Prelims GS Paper 1 Environment & Ecology (Option D) | UPSC Prelims - Q32 |
| 8 | (D) Alternative Practical Definition of UPSC Prelims GS Paper 1 Environment & Ecology (Option D) | UPSC Prelims - Q8 | 33 | (A) Core Analytical Principle on UPSC Prelims GS Paper 1 Environment & Ecology (Option A) | UPSC Prelims - Q33 |
| 9 | (A) Core Analytical Principle on UPSC Prelims GS Paper 1 Environment & Ecology (Option A) | UPSC Prelims - Q9 | 34 | (B) Standard Empirical Assertion in UPSC Prelims GS Paper 1 Environment & Ecology (Option B) | UPSC Prelims - Q34 |
| 10 | (B) Standard Empirical Assertion in UPSC Prelims GS Paper 1 Environment & Ecology (Option B) | UPSC Prelims - Q10 | 35 | (C) Verified Doctrinal Formulation for UPSC Prelims GS Paper 1 Environment & Ecology (Option C) | UPSC Prelims - Q35 |
| 11 | (C) Verified Doctrinal Formulation for UPSC Prelims GS Paper 1 Environment & Ecology (Option C) | UPSC Prelims - Q11 | 36 | (D) Alternative Practical Definition of UPSC Prelims GS Paper 1 Environment & Ecology (Option D) | UPSC Prelims - Q36 |
| 12 | (D) Alternative Practical Definition of UPSC Prelims GS Paper 1 Environment & Ecology (Option D) | UPSC Prelims - Q12 | 37 | (A) Core Analytical Principle on UPSC Prelims GS Paper 1 Environment & Ecology (Option A) | UPSC Prelims - Q37 |
| 13 | (A) Core Analytical Principle on UPSC Prelims GS Paper 1 Environment & Ecology (Option A) | UPSC Prelims - Q13 | 38 | (B) Standard Empirical Assertion in UPSC Prelims GS Paper 1 Environment & Ecology (Option B) | UPSC Prelims - Q38 |
| 14 | (B) Standard Empirical Assertion in UPSC Prelims GS Paper 1 Environment & Ecology (Option B) | UPSC Prelims - Q14 | 39 | (C) Verified Doctrinal Formulation for UPSC Prelims GS Paper 1 Environment & Ecology (Option C) | UPSC Prelims - Q39 |
| 15 | (C) Verified Doctrinal Formulation for UPSC Prelims GS Paper 1 Environment & Ecology (Option C) | UPSC Prelims - Q15 | 40 | (D) Alternative Practical Definition of UPSC Prelims GS Paper 1 Environment & Ecology (Option D) | UPSC Prelims - Q40 |
| 16 | (D) Alternative Practical Definition of UPSC Prelims GS Paper 1 Environment & Ecology (Option D) | UPSC Prelims - Q16 | 41 | (A) Core Analytical Principle on UPSC Prelims GS Paper 1 Environment & Ecology (Option A) | UPSC Prelims - Q41 |
| 17 | (A) Core Analytical Principle on UPSC Prelims GS Paper 1 Environment & Ecology (Option A) | UPSC Prelims - Q17 | 42 | (B) Standard Empirical Assertion in UPSC Prelims GS Paper 1 Environment & Ecology (Option B) | UPSC Prelims - Q42 |
| 18 | (B) Standard Empirical Assertion in UPSC Prelims GS Paper 1 Environment & Ecology (Option B) | UPSC Prelims - Q18 | 43 | (C) Verified Doctrinal Formulation for UPSC Prelims GS Paper 1 Environment & Ecology (Option C) | UPSC Prelims - Q43 |
| 19 | (C) Verified Doctrinal Formulation for UPSC Prelims GS Paper 1 Environment & Ecology (Option C) | UPSC Prelims - Q19 | 44 | (D) Alternative Practical Definition of UPSC Prelims GS Paper 1 Environment & Ecology (Option D) | UPSC Prelims - Q44 |
| 20 | (D) Alternative Practical Definition of UPSC Prelims GS Paper 1 Environment & Ecology (Option D) | UPSC Prelims - Q20 | 45 | (A) Core Analytical Principle on UPSC Prelims GS Paper 1 Environment & Ecology (Option A) | UPSC Prelims - Q45 |
| 21 | (A) Core Analytical Principle on UPSC Prelims GS Paper 1 Environment & Ecology (Option A) | UPSC Prelims - Q21 | 46 | (B) Standard Empirical Assertion in UPSC Prelims GS Paper 1 Environment & Ecology (Option B) | UPSC Prelims - Q46 |
| 22 | (B) Standard Empirical Assertion in UPSC Prelims GS Paper 1 Environment & Ecology (Option B) | UPSC Prelims - Q22 | 47 | (C) Verified Doctrinal Formulation for UPSC Prelims GS Paper 1 Environment & Ecology (Option C) | UPSC Prelims - Q47 |
| 23 | (C) Verified Doctrinal Formulation for UPSC Prelims GS Paper 1 Environment & Ecology (Option C) | UPSC Prelims - Q23 | 48 | (D) Alternative Practical Definition of UPSC Prelims GS Paper 1 Environment & Ecology (Option D) | UPSC Prelims - Q48 |
| 24 | (D) Alternative Practical Definition of UPSC Prelims GS Paper 1 Environment & Ecology (Option D) | UPSC Prelims - Q24 | 49 | (A) Core Analytical Principle on UPSC Prelims GS Paper 1 Environment & Ecology (Option A) | UPSC Prelims - Q49 |
| 25 | (A) Core Analytical Principle on UPSC Prelims GS Paper 1 Environment & Ecology (Option A) | UPSC Prelims - Q25 | 50 | (B) Standard Empirical Assertion in UPSC Prelims GS Paper 1 Environment & Ecology (Option B) | UPSC Prelims - Q50 |
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