Announcements for INO and OCSC

OCSC list in various subjects can be seen here. (updated on March 01, 2023)

INO Question papers and Frozen solutions (updated on Feb 15, 2023)

Subject Question paper (English) Question paper (Hindi) Frozen Solution
Astronomy QP (E) QP (H) Solutions
Biology QP (E) QP (H) Solutions
Chemistry QP (E) QP (H) Solutions (updated on March 01)
Physics QP (E) QP (H) Solutions
Junior Science* QP (E) QP (H) Solutions

Check your INO 2023 score here.

*The INJSO question papers and solutions are provided here on behalf of the Indian Association of Physics Teachers (IAPT), the responsible agency for the Junior Science Olympiad programme. These are also available on the IAPT site.

Schedule of the Indian National Olympiad (INO):

Astronomy (INAO): Saturday, January 28, 2023 09.00 a.m. – 12.00 noon
Junior Science (INJSO): Saturday, January 28, 2023 01.30 p.m. – 04.30 p.m
Chemistry (INChO): Saturday, January 28, 2023 01.30 p.m. – 04.30 p.m
Physics (INPhO): Sunday, January 29, 2023 09.00 a.m. – 12.00 noon
Biology (INBO): Sunday, January 29, 2023 01.30 p.m. – 03.30 p.m.

Tentative schedule for INO-related actions:

Mandatory registration for students on INO website: January 6 – 13, 2023 
Hall Tickets available for download: January 18, 2023 
INO examinations: January 28 – 29, 2023
Question papers and provisional solutions on HBCSE website: January 31, 2023
Comments on provisional solutions: January 31 – February 5, 2023 
INO marks and frozen solutions on HBCSE website: February 17, 2023
Reevaluation request: February 17 – 22, 2023
INO final results and OCSC lists: March 1, 2023

Tentative dates for OCSC/IMOTC:

Astronomy: May 01 – May 18, 2023
Biology: June 02 – June 11, 2023
Chemistry: May 09 – May 19, 2023
Junior Science : May 20 – June 02, 2023
Physics: April 15 – April 28, 2023 
Mathematics: April 15 – May 13, 2023 (confirm at


  1. Students taking any external examination during OCSC camp dates are requested to select Mumbai as their exam centre. Efforts will be made to accommodate such exam schedules in the OCSC programme.’
  2. From this year, all stages of the Junior Science Olympiad will be handled by the Indian Association of Physics Teachers (IAPT). All queries related to Junior Science Olympiad should be directed to . The registration, conduct of examination, evaluation of INJSO and selection for OCSC (JS) are the responsibility of IAPT, and are facilitated through this website.
  3. Candidates for INJSO 2023 are automatically eligible for consideration for the next stages of selection of the Indian team for the International Astronomy Olympiad (IAO-Junior). The selection for the next stages of this programme will be based on performance in INJSO 2023 from among candidates who express their interest in this programme during INO registration. This programme is conducted by the National Council of Science Museums (NCSM) and more information is available at

Click here to view old announcement