There are several case studies and examples that you should be familiar with for Paper I of the UPSC exam. These case studies and examples cover a wide range of topics and are important for gaining a comprehensive understanding of the subject matter. Here are some examples that you should consider studying:

1. Green Revolution in India:
- The Green Revolution in India is a case study that focuses on the agricultural transformation that took place in the country during the 1960s and 1970s.
- It involved the introduction of high-yielding varieties of seeds, improved irrigation techniques, and the use of fertilizers and pesticides.
- The case study highlights the impact of the Green Revolution on agricultural productivity, food security, and rural livelihoods in India.

2. Chipko Movement:
- The Chipko Movement is a case study that focuses on the grassroots environmental movement that originated in the Uttarakhand region of India.
- It involved the villagers hugging trees to prevent them from being cut down by loggers.
- The case study highlights the importance of local communities in environmental conservation and the role of nonviolent protests in raising awareness about environmental issues.

3. Narmada Bachao Andolan:
- The Narmada Bachao Andolan is a case study that focuses on the social movement against the construction of large dams on the Narmada River in India.
- It highlights the displacement of local communities, environmental concerns, and the rights of indigenous people.
- The case study discusses the role of civil society organizations, government policies, and the impact of large-scale infrastructure projects on marginalized communities.

4. Bhopal Gas Tragedy:
- The Bhopal Gas Tragedy is a case study that focuses on the industrial disaster that occurred in Bhopal, India in 1984.
- It resulted in the release of toxic gases from a pesticide plant, causing thousands of deaths and long-term health issues for survivors.
- The case study examines the causes of the tragedy, the corporate responsibility of the company involved, and the government's response to the disaster.

5. Swachh Bharat Abhiyan:
- Swachh Bharat Abhiyan is a case study that focuses on the national cleanliness campaign launched in India in 2014.
- It aims to improve sanitation and hygiene practices, eliminate open defecation, and ensure proper waste management.
- The case study discusses the importance of sanitation for public health, the role of government initiatives, and the challenges faced in implementing the campaign.

By studying these case studies, you will gain a deeper understanding of the key issues, challenges, and solutions related to the topics covered in Paper I of the UPSC exam.