Unique Paper Code 4181
Revised 0 of 4

Environmental Science: Theory into Practice (I)June 2025, Semester II, evening

All UG courses · 11 questions · 9 parts still being checked

Duration: 1 h, 1 h 45 or 2 h 30Maximum Marks: 30, 50 or 70

Reworded by Kunji from the printed paper. The original paper belongs to the University of Delhi. See DU's question bank.

Before you start

  1. This paper. This paper has three parts, and your admission year and mode decide which you sit: Part A only, 30 marks in 1 hour; Parts A and B, 50 marks in 1 hour 45 minutes; Parts A, B and C, 70 marks in 2 hours 30 minutes. The cover of your own paper says which applies to you.
  2. Most asked here. Scope of environmental studies and basic terms (16 papers), Solid waste management (15 papers), Land resources: soil, forests, mining and dams (12 papers). These come back almost every year, so learn them first. The asked N× note beside each part counts the DU papers that set its topic.
  3. Pace. Two minutes a mark: about 20 minutes for each 10-mark question, with nothing spare in 2.5 hours. Move on when the time is up.
  4. Keep score. Every part opens a worked answer checked against the books. Turn the key when you have revised it; the boxes at the top fill in, on this device.
Part A

1.

10 marks
· ~20 min
(a)
Five true-or-false statements on productivity, irrigation, the Kaveri dispute, Madhya Pradesh's forests and PM2.5Being checked
(5)
(b)
Five blanks filled: acid rain gases, pioneer species, Tarun Bharat Sangh, the AQI, alpine meadowsBeing checked
(5)

2.

10 marks
· ~20 min
Provisioning versus cultural ecosystem services; the carbon cycle versus the nitrogen cycleBeing checked
(10)

3.

10 marks
· ~20 min
Short notes on the ecological role of mangrove forests and on sustainable irrigation methodsasked 10×Write short notes on the following ones (attempt any two) : 2×5=10 (i) The Ecological role of mangrove forests (ii) The Sustainable irrigation methods (iii) The Bhopal Gas Tragedy (iv) Desertification and its impact on…(10)

4.

10 marks
· ~20 min
River water conflicts and their socio-economic impacts between regionsBeing checked
(10)

5.

10 marks
· ~20 min
Unsustainable farming and water stress in semi-arid regions; sustainable practices for water conservationBeing checked
(10)
Part B

6.

10 marks
· ~20 min
Sorting college waste into green, blue and black bins, and a plan for collection and disposalasked 15×You are the President of the Environment Club of your college and have been asked to prepare a table that sensitises students about using green, blue and black colour dustbins for segregating waste. A list of waste…(10)

7.

10 marks
· ~20 min
Climate change, biodiversity and environment lawBeing checked
(10)

8.

10 marks
· ~20 min
Solid waste managementBeing checked
(10)
Part C

9.

10 marks
· ~20 min
Five definitions: soil erosion, wetlands, primary air pollutants, eutrophication, compostasked 16×Define the following ones (attempt any five) : 2×5=10 (i) The Soil erosion (ii) The Renewable energy (iii) Wetlands (iv) Primary air pollutants (v) The Atmosphere (vi) Eutrophication (vii) Compost.(10)

10.

10 marks
· ~20 min
Pollution case studiesBeing checked
(10)

11.

10 marks
· ~20 min
(a)How deforestation in the Himalayas creates ecological, social and economic problemsasked 12×Explain in what way deforestation in the Himalayas gives rise to ecological, social and economic problems.(6)
(b)
Natural-resource case studiesBeing checked
(4)

— End of the paper —