UGC NET Environmental Science Unit 10 PYQs with Answers

Unit 10 of the UGC NET Environmental Science syllabus focuses on environmental pollution, pollution control, environmental monitoring, waste management, and environmental standards. Questions from this unit are frequently asked in the examination because they combine conceptual knowledge with current environmental policies and international conventions.

Practising UGC NET Environmental Science Unit 10 PYQs helps candidates understand the exam pattern, identify frequently tested topics, and strengthen conceptual clarity. Here, you'll find important previous year questions with answers and explanations to improve your preparation.

UGC NET Environmental Science Unit 10 PYQs with Answers

The following questions from the previous year's Unit 10 can help candidates evaluate their preparation and gain a better understanding of the types of questions asked in the examination.

1. How many methodologies under 'offset mechanism' of the Carbon Credit Trading Scheme (CCTS, 2023), allowing non-obligated entities to participate in voluntary climate mitigation projects, are proposed by the Government of India?

(A) 5

(B) 6

(C) 8

(D) 12

Answer: (C) 8
Explanation: Under the Carbon Credit Trading Scheme (CCTS) 2023, the Government of India proposed 8 methodologies under the offset mechanism that allow non-obligated entities to voluntarily participate in climate mitigation projects and earn carbon credits.

2. National Mission for a Green India (GIM) is one of the eight missions under National Action Plan on Climate Change. Which of the following is NOT listed as an aim of Green India Mission for forest cover and response to climate change?

(A) Conservation

(B) Enhancement

(C) Protection

(D) Restoration

Answer: (A) Conservation
Explanation: The Green India Mission aims at Enhancement, Protection, and Restoration of forest cover to respond to climate change. Conservation as a standalone aim is not listed among the specific objectives of GIM — it focuses more on enhancing, protecting, and restoring degraded forest lands.

3. Arrange the following in chronological order as per their year of enactment starting from old to recent one 

A. Basel Convention
B. Montreal Protocol
C. Copenhagen Summit
D. Kyoto Protocol
E. Tiblisi Conference
Choose the correct answer from the options given below:

(A) A, B, C, D, E

(B) E, B, A, D, C

(C) E, D, C, B, A

(D) D, A, B, E, C

Answer: (B) E, B, A, D, C
Explanation: Tbilisi Conference (1977) → Montreal Protocol (1987) → Basel Convention (1989) → Kyoto Protocol (1997) → Copenhagen Summit (2009) is the correct chronological order from oldest to most recent.

4. A building can be awarded three star rating under GRIHA Rating Norms 2019 if its point score is:

(A) 72

(B) 68

(C) 52

(D) 81

 Answer: (C) 52
Explanation: Under GRIHA Rating Norms 2019, a three star rating is awarded to buildings that achieve a point score of 52, as the rating system assigns star levels based on defined point score thresholds across various sustainability parameters.

5. Match the List-I and List-II.

List-I (Conference of the Parties (UNFCCC)) — List-II (?)
(a) COP26 — (i) Baku
(b) COP27 — (ii) Dubai
(c) COP28 — (iii) Sharmel-Sheikh
(d) COP29 — (iv) Glasgow
Choose the correct answer from the options given below:

(A) (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)

(B) (a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)

(C) (a)-(iv), (b)-(ii), (c)-(iii), (d)-(i)

(D) (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)

Answer: (D) (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
Explanation: COP26 → Glasgow (2021); COP27 → Sharm-el-Sheikh (2022); COP28 → Dubai (2023); COP29 → Baku (2024).

6. Arrange the following criterion of GRIHA: 2019 in increasing order of points alloted.

 A. Energy optimisation
B. Green Infrastructure
C. Maintaining good IAQ
D. Top Soil Preservation.
E. Water Demand Reduction
Choose the most appropriate answer from the options given below:

(A) A, C, B, E, D

(B) D, C, B, E, A

(C) C, A, B, E, D

(D) D, E, B, C, A

Answer: (B) D, C, B, E, A
Explanation: In GRIHA 2019, points allotted in increasing order are: Top Soil Preservation (lowest) → Maintaining good IAQ → Green Infrastructure → Water Demand Reduction → Energy Optimisation (highest), reflecting the greater weightage given to energy-related criteria.

7. Which of the following Environmental movement are correctly written with the place of origin?

A. Appiko movement (1983) – Kerala
B. Bishnoi movement (1700) – Rajasthan
C. Gandhamardhan movement (1983) – Odisha
D. Jungle Bachao movement (1982) – Bihar
E. Silent Valley movement (1973) – Karnataka
Choose the most appropriate answer from the options given below:

(A) A, B and C Only

(B) B, C and D Only

(C) C, D and E Only

(D) A, B and E Only

Answer: (B) B, C and D Only
Explanation: Bishnoi movement (1700) – Rajasthan ✓; Gandhamardhan movement (1983) – Odisha ✓; Jungle Bachao movement (1982) – Bihar ✓. Appiko movement originated in Karnataka (not Kerala), and Silent Valley movement was in Kerala (not Karnataka).

8. Match the List-I and List-II.

List-I (Environmental Disaster) — List-II (Place)

(a) Agent Orange — (i) China
(b) Bohai Bay — (ii) Japan
(c) Itai-Itai — (iii) United States
(d) Love Canal — (iv) Vietnam
Choose the correct answer from the options given below:

(A) (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)

(B) (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)

(C) (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)

(D) (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)

Answer: (A) (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
Explanation: Agent Orange → Vietnam (used during Vietnam War); Bohai Bay oil spill → China; Itai-Itai disease (cadmium poisoning) → Japan; Love Canal toxic waste disaster → United States.