The key components of India's civil services exam include:

• Economy: Candidates are expected to have a comprehensive understanding of the Indian economy, including its various sectors, economic policies, and international trade relations.
• Health: Knowledge of various health programs, policies, and challenges in India, including topics like healthcare infrastructure, diseases, and public health initiatives.
• Polity: This component covers the structure, functioning, and powers of the various government institutions, including the legislature, executive, and judiciary.
• Governance: Candidates are tested on their understanding of governance mechanisms, administrative processes, public service values, and ethics.
• Environment: Knowledge of environmental issues, conservation measures, environmental policies, and sustainable development are essential to this component.
• Technology: Understanding the role of technology, including information technology, in governance, e-governance initiatives, and digital inclusion are crucial.
• Science: Candidates are tested on their knowledge of various scientific advancements, technologies, and their applications in areas like agriculture, medicine, and space.
• International Affairs: Knowledge of international relations, major global issues, India's foreign policy, and international organizations like the United Nations is important.
• Society: This component covers various social issues such as poverty, inequality, gender, education, social justice, and welfare schemes.
• Security: Understanding national and internal security challenges, defense policies, arms control, terrorism, and disaster management is essential.
• Disaster Management: Knowledge of disaster management strategies, response mechanisms, and relevant policies are tested in this component.
• Geography: Candidates are expected to have a good understanding of the physical, economic, and social geography of both India and the world.
• History: Knowledge of Indian and world history, major historical events, movements, and personalities are covered in this component.
These components collectively ensure that candidates have a well-rounded understanding of various subjects relevant to governance, administration, and national development.