There are several case studies and examples that can be focused on in Paper-I of the UPSC exam. These case studies provide valuable insights into various aspects of Indian society, economy, governance, and culture. Some of the key case studies and examples that can be considered are:

1. Green Revolution in India:
- This case study focuses on the successful implementation of the Green Revolution in India during the 1960s and 1970s.
- It highlights the use of modern agricultural techniques, high-yield seeds, and the role of government policies in increasing agricultural productivity and food security.

2. Economic Liberalization and Globalization:
- This case study examines the economic reforms initiated in India in the early 1990s, which aimed at liberalizing the economy and integrating it with the global market.
- It discusses the impact of economic liberalization on sectors like trade, investment, and the growth of the service sector.

3. Panchayati Raj System:
- This case study explores the implementation of the Panchayati Raj system in India, which aims at decentralizing power and involving local communities in decision-making.
- It analyzes the role of Panchayati Raj institutions in promoting grassroots democracy, rural development, and inclusive governance.

4. Reservation Policy in India:
- This case study focuses on the reservation policy in India, which aims at providing affirmative action to historically disadvantaged groups.
- It examines the rationale, implementation, and impact of reservation policies on education, employment, and social mobility.

5. Women Empowerment and Gender Equality:
- This case study highlights the efforts made towards women empowerment and gender equality in India.
- It discusses initiatives such as the Beti Bachao Beti Padhao campaign, the Maternity Benefit Act, and the role of women in politics and leadership positions.

6. Impact of Information Technology:
- This case study examines the role of information technology in transforming various sectors of the Indian economy, such as IT services, e-commerce, and digital governance.
- It analyzes the impact of IT on employment, innovation, and bridging the urban-rural divide.

These case studies provide a comprehensive understanding of the socio-economic, political, and cultural dynamics of India. They help candidates develop a holistic perspective on issues and challenges facing the country, and also showcase the impact of policies and initiatives in addressing these challenges.