International Junior Science Olympiad

International Junior Science Olympiad


Stage I:-

 National Standard Examination in Junior Science (NSEJS)

  • NSEJS is the first stage of selection of students in the Junior Science Olympiad Programme. NSEJS is organised by the Indian Association of Physics Teachers (IAPT).
  • Every student aspiring to go through successive stages of the programme must enroll for NSEJS.  NSEJS is held at a large number of centres in the country.

Eligibility (NSEJS):

  • All Indian students who are born on or after January 1, 1996 and, in addition, are in Class X or lower as of November 30. Are eligible to appear in NSEJS.
  • If they qualify in the NSEJS, they will be eligible for subsequent stages leading to participation in International Junior Science Olympiad.
  • It is the student’s responsibility to ensure that the eligibility criteria are satisfied. In case at any stage of the program it is found that the student does not satisfy the eligibility criteria, he/she may be disqualified from the program.


  • The syllabus for NSEJS is broadly equivalent to the secondary school level (upto Class X) of CBSE.

The different basic subjects of science (physics, chemistry, biology and mathematics) will have roughly equal emphasis.

This is only a broad guideline, and there is no detailed syllabus given for NSEJS.

Question Paper:

NSEJS emphasize comprehension of the subject, not rote memory.  Its format is as under:

Total marks: 150

Multiple choice questions consisting of:


30 questions with only one of the four options correct (negative marks for incorrect answers).
Each question carries 3 marks.


10 questions with any number of the four options correct .
To get credit, all correct option (s) and no incorrect option(s) should be marked. Each question carries 6 marks.




Qualifying for the Second Stage:-

  • Based on performance in NSEJS, the top 300 students in order of merit qualify to appear for the Second Stage of the Olympiad programme INJSO. In case there is a tie at the last position, all students with the same marks at this last position qualify for INJSO.
  • All students who qualify to appear for INJSO get a certificate of merit from IAPT.
  • For any queries or clarifications and for any difficulties regarding enrollment for NSEJS, please contact:

Stage II:

 Indian National Junior Science Olympiad (INJSO)

  • INJSO is organized by HBCSE at about 15 centers in the country.


  • Students selected from Stage I examination (NSEJS) are eligible to appear for INJSO. In addition those students who have been exempted as described in the Enrollment page are also eligible to appear for INJSO.
  • Besides these two ways, there is no other way by which a student becomes eligible to appear for INJSO.
  • The date and schedule will be announced in the first week of January on HBSSE website and communicated by post to the eligible students.  Students appearing for INJSO are eligible for TA/DA as per norms of the programme.


  •  The syllabus for INJSO is broadly similar to NSEJS. The syllabus is, however, only a broad guideline. Questions and problems in National Olympiads are usually non-conventional and of high difficulty level, comparable to International Olympiads.
  • On the basis of performance in INJSO, the top 36 students in the merit list are selected for Stage III: Orientation Cum Selection Camp (OCSC) in Junior Science.
  • In the event, there is a tie at the last position; all students with the same marks at this last position will qualify for OCSC in Junior Science.
  • There is  no other criterion or provision for selection to OCSC.

Stage III:

 Orientation cum Selection Camp (OCSC) in Junior Science

  • OCSC in Junior Science will be organized by HBCSE sometime in April to June for 2-3 weeks. The precise dates will be announced prior to or along with the announcement of the selection list for the OCSC.

Eligibility for OCSC: 

  • Only the students selected from the merit list of Stage II (INJSO 2011) will be eligible for OCSC 2011 in Junior Science. There will be no other criterion or provision.
  • The camp will include several theoretical and experimental tests.  Orientation will be provided to students especially in experiments. The camp will conclude with a valedictory function where distinguished scientists will be invited to speak to the students.
  • The merit list of OCSC  in Junior Science is  prepared on the basis of the combined theoretical and experimental score aggregated over all the tests in the camp, with 60% weightage for theory and 40% weightage for experiment.
  • Performance in previous stages (NSEJS and INJSO) is not considered for the merit list and awards of the OCSC.
    The top 6 in the OCSC Junior Science merit list are declared to be special merit awardees. These special merit awardees are given Rs. 5,000 each in the form of books and cash.
  • In addition, there are special prizes to recognize meritorious performance in theory and experiments.
  • The 6 special merit awardees in Junior Science selected at the end of the OCSC 2011 constitute the 6 member student team for the International Junior Science Olympiad (IJSO) 2011, provided they satisfy required criteria such as age limit, holding valid Indian passport, medical fitness, parental consent, etc.

 Stage IV:

Pre-departure Training (PDT) Camp for IJSO

  • The selected 6 member student team undergoes a rigorous training programme at HBCSE in theory and experiment.
  • Special laboratories are being developed at HBCSE for the purpose of experimental training. Resource persons from HBCSE and different institutions across the country will train the students.

Stage V:

 Participation in International Junior Science Olympiad (IJSO)

  • The 6 member student team and 3 teacher leaders constitute the delegation to represent India at the International Junior Science Olympiad (IJSO).

No of Questions
Total MarksClass 12
No of Questions
Total MarksTotal 
Difficulty LevelCount of Question No.Sum of Marks
Aggregate Difficulty1.92
Grand Total80240
Unit & Topic NameNo of QuestionsTotal Marks% Weightage
Grand Toal80240100.00%
Anatomy of Plants131.25%
Biological Classification113313.75%
Animal kingdom92711.25%
Biological Classification131.25%
Evolutionary Relationship131.25%
Cell Biology103012.50%
Chemical Coordination in Animal131.25%
Endocrine System131.25%
Digestive System in Man131.25%
Excretory System of Man131.25%
Immune System131.25%
Mineral Nutrition262.5%
Molecular Genetics262.5%
Morphology of Plants131.25%
Nervous System in Man262.5%
Plant Anatomy131.25%
Plant Growth & Movement393.75%
Plant Water Relation131.25%
Reproduction in Animal262.5%
Transport in Plants393.75%

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