The International Chemistry Olympiad (ICHO) consists the 5 following stages-
Stage I: NSEC- National Standard Examination in Chemistry
Stage II: INChO- Indian National Chemistry Olympiad
Stage III: OSC- Orientation cum Selection Camp in subject of chemistry
Stage IV: PDT- Pre-departure Training Camp for IChO
Stage V: IChO- Participation in International Chemistry Olympiad.
The first stage is the responsibility of Indian Association of Physics Teachers- IAPT. Stage 1 is entirely the responsibility of IAPT. Apart from the first stage, all the other stages are planned and organized by HBCSE.
Here We are enlosing previous year papers of these stages exams --
Stage I :NSEC ( National Standard Examination in Chemistry)--