You need not ask this simple things in the Forum, which by yourself can check in the web site of TN Sales Tax https://www.tnvat.gov.in/English/VATSCHE_ALPHA_270312.pdf
open the pdf file --- use CTRL F --- and type the product name or neareast word matching the commodity -- it will take you to the commodity immediately, pl try you will find the below referred items:
Mobile Accesories Commodity code No.371 taxable at 14.5%
School Bags Commodity Code No.818 taxable at 5%
any interstate sale will attract the same local tax payble for that commodity, only think is if sell it to registered dealer then you can sell at 2% against Form-C