Get the official NIOS practical file format from your subject teacher or study centre
Use a clean notebook or practical file register
Write the subject name, class, enrolment number, and student details on the cover page
Prepare a title page for the practical file
Write the index page with experiment names and page numbers
Mention the aim of each experiment clearly
Write the required materials or apparatus for each practical
Write the procedure step by step
Record observations in proper tables or points
Write calculations, if needed, neatly
Write the result or conclusion for each practical
Add diagrams, charts, or graphs wherever required
Keep handwriting neat and legible
Leave proper margins and spacing
Use blue or black ink only
Do not overwrite or use correction fluid
Number all pages properly
Arrange practicals in the correct order
Get each practical signed by the teacher
Attach required record sheets, if any
Keep the file clean and well maintained
Submit the file before the deadline
Recheck all entries before final submission