Understanding key parts of the Constitution is vital for UPAC aspirants, as it forms the backbone of many topics covered in the exam. Notable sections include the Fundamental Rights, Directive Principles of State Policy, and the structure of governance at both Central and State levels. Familiarity with Constitutional amendments and landmark judgments also enhances comprehension of contemporary issues. The Constitution provides critical context for discussions on law, rights, and social justice, essential for both the Mains and Interview phases of the UPSC exam. A well-rounded grasp of these aspects bolsters overall preparedness.