Hello

You can visit the link I am attaching below, so that you can get access to the answer key for classes 1 to 12. The SOF(Science Olympiad Foundation) released the SOF NSO answer key for set A on December 16, 2025. You can also visit the official site of SOF website and look for the NSO answer key from there. By just selecting your class and set, you can download the PDF.

DIRECT LINK: CLICK HERE