Past Papers

Sri Lanka National Chemistry Olympiad

• Preliminary Examination 2025 Full PDF ( English, Sinhala, Tamil)
• Preliminary Examination 2024 Full PDF ( English, Sinhala, Tamil)
• Preliminary Examination 2023 Full PDF (English, Sinhala, Tamil)
• Preliminary Examination 2022 Full PDF (English/Answers, Sinhala/Answers, Tamil/Answers)
• Preliminary Examination 2020 Full PDF (English, Sinhala, Tamil, MCQ answers)
• Preliminary Examination 2019 Full PDF (English, Sinhala, Tamil, MCQ answers, Structured answers)
• Preliminary Examination 2018 link for MCQs with solutions (English, Sinhala, Tamil)
• Preliminary Examination 2018 Full PDF (English, Sinhala, Tamil)

Sri Lanka Junior Chemistry Olympiad

• Examination 2025 Full PDF ( English, Sinhala, Tamil)