Homi Bhabha Centre for Science Education (HBCSE) is the nodal centre for conducting Olympiad programmes in Mathematics and Sciences.
National Standard Examination in Junior Science(NSEJS) is organized by the Indian Association of Physics Teachers (IAPT). Here, Junior Science means the ‘science’ taught till std. X level. IAPT is an association of Physics Teachers spread throughout the country. It was started by Late Dr. D.P. Khandelwal in 1984.
The Junior Science Olympiad program follows the following 5 Stages – Stage-I: NSEJS / Stage-II: INJSO, Stage-III: OCSC, Stage-IV: PDT for IJSO, Stage-V: IJSO
NSEJS is generally held one week before other NSEs and it held separately in Kendriya Vidyalays on the month of November. If a student will be in the Top 300 merit list, then he/she will be invited for stage II of the selection process. This stage II is the Indian National Junior Science Olympiad or INJSO exam which is conducted in the last week ofJanuary. Approximately Top 35 students selected from INJSO will be fortunate to attend the Orientation Cum Selection Camp (OCSC) for 2 to 3 weeks in April - June at the Homi Bhabha Centre for Science Education (TIFR), Mumbai. This is the third and final stage of the selection process. Top 6 students selected from OCSC will represent India for the International Olympiad in Junior Science (IOJS).

Mathematical Olympiad
The Mathematical Olympiad Programme in India, which leads to participation of Indian students in the International Mathematical Olympiad (IMO) is organized by the Homi Bhabha Centre for Science Education (HBCSE) on behalf of the National Board for Higher Mathematics (NBHM) of the Department of Atomic Energy (DAE), Government of India. This programme is one of the major initiatives undertaken by the NBHM. Its main purpose is to spot mathematical talent among pre-university students in the country.
The Mathematical Olympiad programme consists of five stages:

  • Stage 1: Regional Mathematical Olympiad (40000-50000 students) (Descriptive Questions)
  • Stage 2: Indian National Mathematical Olympiad (800-900 students) (Descriptive Questions)
  • Stage 3: IMO Training Camp (35-50 students) - HBCSE (Lecture & Problem Solving Sessions)
  • Stage 4: Pre-Departure Camp (6 students) - HBCSE (Lecture & Problem Solving Sessions)
  • Stage 5: International Olympiad (6 students) - (Problem Solving Sessions)

Way to international Olympiad through NSE
Stages of Olympiads
The National Science Olympiad starts with an examination held at nearly 1400 schools across the country and culminates with the International Olympiads at different corners of the world.
The Olympiad programmes include Mathematics, Physics, Chemistry, Biology, Astronomy and Junior Science which have a five stage process for enrollment in each subject separately. Apart from the first stage, the other stages are organized by HBCSE.

The International Olympiad (IO) program follows a five stage process:

  • Stage One- National Standard Examinations (NSEs) [15000 to 50000 students] Theoretical Objective Questions in Physics, Chemistry, Biology, Astronomy, Junior Science organized by IAPT. All the subsequent stages are conducted by Homi Bhabha Center for Science Education (HBCSE), Mumbai. (
  • Stage Two- Indian National Olympiad (INO) exams [300 to 500 students] Theoretical Objective & Long Questions. The eligible students from stage one can participate in INO in respective subjects.
  • Stage Three- Orientation Cum Selection Camps (OCSC) HBCSE [30 to 50 students] Theoretical & Experimental Sessions. For these camps, about 35 students in each subject will be selected from INO on performance basis
  • Stage Four- These students will have a Pre Departure Training (PDT) for two weeks HBCSE [4 to 6 students] Theoretical & Experimental Sessions.
  • Stage Five- Participation in International Olympiad (IO) of the selected students International Venue [4 to 6 students] Theory & Experiment Competition.

  • Last date of Enrollment : Mid September
  • Exam Date : End of November
  • Result : Last week of December
  • Eligibility Criteria
  • All Indian students born on or after 1st July, 1997 and studying in Class XII or lower as of 30th November, 2016 are eligible to appear for NSEP, NSEC, NSEB and NSEA 2016-2017. If they qualify in NSEP /NSEC/NSEB they will be eligible for the next stage leading to participation in International Olympiads for Physics, Chemistry and Biology in 2016, respectively.
  • Exam Structure
Examination Paper Pattern Total Marks


Multiple choice questions:
Part A1: 3-marks for each correct answer out of four alternatives
Part A2: 6-marks for each with one or more than one option correct answers. To get credit, all correct option(s) and no incorrect option(s) should be marked. No negative marking.

NSEC 80 multiple choice questions, each for 3 marks and Negative (-1) mark for incorrect answer. 240
NSEB 80 multiple choice questions, each for 3 marks and Negative (-1) mark for incorrect answer. 240
NSEA 80 multiple choice questions, each for 3 marks and Negative (-1) mark for incorrect answer. Questions will be in Physics, Maths and 20% in Basic Astronomy. 240

National Standard Examinations in Physics (NSEP), Chemistry (NSEC), Biology (NSEB), Astronomy (NSEA)

Please visit for detailed information about NSEs.
Please do not contact HBCSE in connection with Stage I enrollment, since this is entirely supervised by IAPT. Log on:



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