The Central Board of Secondary Education has released a new circular regarding Instructions for the Conduct of CBSE Science Challenge 2025-26 Round 2 on its official website. Those candidates who want to get all important information and latest updates regarding Instructions for the Conduct of CBSE Science Challenge 2025-26 Round 2 then read this blog post till the end.
CBSE Board has also released the date of conducting CBSE Science Challenge 2025-26 Round II and has also released the registration link to participate in Round 2. Read this blog post in full for more information.
Instructions for the Conduct of CBSE Science Challenge 2025-26 Round 2
The second round of the CBSE Science Challenge for the session 2025-26 will be held on 08 May 2025 between 11:00 AM to 01:00 PM. Please note that this round can be taken only by those students who have registered for CBSE Science Challenge 2025 Round II by their schools after the conduct and evaluation of Round I.
The link for the test of CBSE Science Challenge 2025-26 Round 2 will be live on the CBSE main website and CBSE Academic website on the informed date and time.
The registered schools for CBSE Science Challenge Round II will log in using their LoC credentials as used during the process of registration.
All students registered for Science Challenge Round II will attempt the Science Challenge individually.
The total duration of the round 2 exam will be 60 minutes which will include downloading the Science Challenge Question Paper, reading the instructions, answering the challenge, and uploading the answered quiz.
After the exam duration is over, the portal will be closed. No grace time will be given by the authority for uploading the answered question paper.
The total number of questions in CBSE Science Challenge 2025-26 Round II will be 40, each question will carry a 1 mark. There will be no negative marking. Students have to submit the round 2 exam as soon as it is completed.
Merit will be prepared based on the accuracy of answers and the minimum time taken in the round 2 test to submit the final answer sheet.
Requirement:
- One computer for each registered student.
- High-speed internet facility (at least 50 MBPS)
- Medium to high configuration computer with at least 8 GB RAM
- The computer should have the latest configuration
- Works on any browser, but Google Chrome is preferred for best performance.
Official Notification PDF for CBSE Science Challence 2025-26 Round 2
We hope that after reading this blog post you have got complete information related to “Instructions for the Conduct of CBSE Science Challenge 2025-26 Round 2”. In this blog post you will get the link to download the PDF of the official notification.

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