Stages

The All India Olympiad program is a national-level competition that follows a two-stage process for both Science and Mathematics, though the procedures differ slightly between the subjects.

Stages of All India Olympiad:

It begins with an examination conducted in numerous schools across the country and culminates in a final test that meets the standards of international Olympiads. The exams are meticulously designed to evaluate conceptual understanding, logical reasoning, laboratory skills, and, most importantly, the ability to apply problem-solving techniques to new challenges, both theoretical and experimental. The syllabus can be found here.

Stage 1:

The first stage examination, the All India Olympiads - Level-1 (aIO-1) for Science (Class 6-10), Physics, Chemistry, Biology, and Astrophysics are 2 hour tests, whereas Mathematics olympiad is a 3 hour test with objective type questions and are offered in English. The syllabus is broadly equivalent to up to the corresponding class of the Central Board of Secondary Education (CBSE). However, the questions in all levels of Olympiads (including aIO-1) may be expected to be of a higher difficulty level than the board examinations. These examinations are held close to the mid-year June or July every year at numerous centres across the nation. Students can register for this preliminary stage at their own schools. The registration fee is ₹100 per subject. The syllabus can be found here.

ExamQuestion paper patternSyllabus
All India Science Olympiad Level-1 (aISO-1)
  • Duration: 2 Hours
  • Total Questions: 60
  • Maximum Marks: 216
  • 48 multiple choice questions with one alternative correct.
    • +3 marks credit for correct choice.
    • -1 mark penalty for incorrect choice.
  • 12 multiple choice questions with one or more than one correct alternatives.
    • +6 marks if all the correct alternatives are marked and no incorrect.
    • No negative marks in this part.
Is broadly equivalent up to the corresponding class of CBSE India. All the basic subjects of science (Biology, Chemistry and Physics) with equal emphasis.
  • All India Physics Olympiad Level-1 (aIPhO-1)
  • All India Chemistry Olympiad Level-1 (aIChO-1)
  • All India Biology Olympiad Level-1 (aIBO-1)
  • All India Astronomy Olympiad Level-1 (aIAO-1)
  • Duration: 2 Hours
  • Total Questions: 60
  • Maximum Marks: 216
  • 48 multiple choice questions with one alternative correct.
    • +3 marks credit for correct choice.
    • -1 mark penalty for incorrect choice.
  • 12 multiple choice questions with one or more than one correct alternatives.
    • +6 marks if all the correct alternatives are marked and no incorrect
    • No negative marks in this part.
Is broadly equivalent up to the corresponding class of CBSE India. For Astronomy - There will be greater emphasis on Physics, Mathematics and elementary Astronomy.
All India Mathematics Olympiad Level-1 (aIMO-1)
  • Duration: 3 Hours
  • Total Questions: 30
  • Maximum Marks: 100
  • The answer to each question is either a single-digit number or a two-digit number in the range 00-99, and will need to be marked on a machine-readable OMR response sheet.
    • Questions 1 to 10 carry 2 marks each.
    • Questions 1 to 10 carry 2 marks each.
    • Questions 11 to 20 carry 3 marks each.
    • Questions 21 and 30 carry 5 marks each.
    • There are no negative marks.
Is broadly equivalent up to the corresponding class of CBSE India.

Stage 2:

The best-performing students from the aIO-1 (approximately 300 in each subject) qualify for the second stage — the All India Olympiads Level 2 (aIO-2), is a three-hour examination with six problems. The aIO-2 are held in late July at around 18 centres across the country. The syllabus is the same as that of the aIO-1. The tests consist of objective as well as long questions. The problems under each topic involve a high level of difficulty and sophistication. The registration fee is ₹100.

ExamQuestion paper patternSyllabus
All India Science Olympiad Level-2 (aISO-2)
  • Duration: 3 Hours
  • Total Questions: 30
  • Maximum Marks: 180
  • 15 multiple choice questions with only one correct answer.
    • +3 marks credit for correct choice.
    • -1 mark penalty for incorrect choice.
  • 9 multiple choice questions with one or more than one correct alternatives.
    • +5 marks if all the correct alternatives are marked and no incorrect.
    • No negative marks in this part.
  • 11 subjective questions with one or more than one correct alternatives.
    • The process involved in arriving at the solution is more important than the final answer.
    • Valid assumptions / approximations are perfectly acceptable. Please write your method clearly, explicitly stating all the reasonings / assumptions / approximations.
    • No negative marks in this part.
Is broadly equivalent up to the corresponding class of CBSE India. All the basic subjects of science (Biology, Chemistry and Physics) with equal emphasis.
  • All India Physics Olympiad Level-2 (aIPhO-2)
  • All India Chemistry Olympiad Level-2 (aIChO-2)
  • All India Biology Olympiad Level-2 (aIBO-2)
  • All India Astronomy Olympiad Level-2 (aIAO-2)
  • Duration: 3 Hours
  • Total: 6 Questions
  • Maximum Marks: 80
  • 6 subjective questions.
    • Each question requires writing detailed proof.
    • No negative marks.
Is broadly equivalent up to the corresponding class of CBSE India. For Astronomy - There will be greater emphasis on Physics, Mathematics and elementary Astronomy.
All India Mathematics Olympiad Level-2 (aIMO-2)
  • Duration: 3 Hours
  • Total: 6 Questions
  • Maximum Marks: 102
  • 6 subjective questions.
    • Each Question is of 17 marks.
    • Each question requires writing detailed proof.
    • No negative marks.
Is broadly equivalent up to the corresponding class of CBSE India.