To pursue a B.Sc. (Bachelor of Science) degree at Pachaiyappas College, Chennai, aspiring candidates must meet certain eligibility criteria. Students should have completed their higher secondary education (10+2) or an equivalent examination from a recognized board with a science stream, including subjects like Physics, Chemistry, and Mathematics or Biology. Additionally, applicants must satisfy the minimum percentage requirement set by the college, which may vary from year to year. Admissions are typically granted based on merit, determined by the candidate's performance in the qualifying examination. It is essential for students to check the official college website or prospectus for any specific eligibility criteria updates.