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Previous Year Question Paper

ES-301 - Energy & Environmental Engineering

December 2025CSITSEMESTER-3
December 2025
Max Marks: 70
Duration: 3 Hours
Instructions:

Attempt any five questions.

All questions carry equal marks.

Q.1
a)Unit 1

Explain the concept of energy systems and discuss major energy resources.

b)Unit 1

Discuss sustainability and environmental trade-offs of fossil fuel-based energy systems.

Q.2
a)Unit 1

Describe renewable energy alternatives to fossil fuels with examples.

b)Unit 1

Explain energy storage technologies such as pumped storage and high-efficiency batteries.

Q.3
a)Unit 2

Define an ecosystem and explain its structure and functions.

b)Unit 2

Describe energy flow and ecological pyramids in an ecosystem.

Q.4
a)Unit 2

Explain forest and grassland ecosystems highlighting their characteristics.

b)Unit 2

Discuss aquatic ecosystems with reference to ponds and oceans.

Q.5
a)Unit 3

Define biodiversity and explain its different levels.

b)Unit 3

Discuss India as a mega-diversity nation and biodiversity hotspots.

Q.6
a)Unit 3

What are the major threats to biodiversity in India?

b)Unit 3

Explain in-situ and ex-situ conservation methods.

Q.7
a)Unit 4

Define environmental pollution and discuss causes and effects of air and water pollution.

b)Unit 4

Explain solid waste management and the role of individuals in pollution prevention.

Q.8
a)Unit 5

Discuss climate change and global warming with suitable examples.

b)Unit 5

Explain major environmental protection acts in India and public awareness.