Hello,

You can download sample question papers for the 2024 National Science Olympiad (NSO) for classes 1 to 12 from online websites. These papers give a clear understanding of the pattern of the exam and thus aid in preparation. The Science Olympiad Foundation (SOF) and other websites such as Vedantu and SOF Olympiad Trainer have downloadable PDFs and online practice tests.

Here are a few resources:

1. Official website of SOF: Gives access to sample papers for all classes and preparation materials like mock tests and OMR sheets.
2. Vedantu: Provides free downloadable PDFs of sample papers of NSO along with solutions.

Visit these platforms to download relevant materials and start practicing. I'll be happy to help you further if you need it!