non taxable or taxable supply?

yes..those are treated as exempted goods ...you don't want to pay any tax for trading of these goods..

thanku sir...
can u provide the list/notification no. or section where i can get it in detail?

in play store apps are there.u can check Google...there u can find the list of exempted goods. and taxable goods with exact percentage

Check the hsn code below:

1001Wheat and meslin [other than those put up in unit container and bearing a registered brand name]. NIL GST

1002Rye [other than those put up in unit container and bearing a registered brand name]NIL GST

1003Barley [other than those put up in unit container and bearing a registered brand name]NIL GST

1006Rice [other than those put up in unit container and bearing a registered brand name]NIL GST

1008Buckwheat, millet and canary seed; other cereals such as Jawar, Bajra, Ragi] [other than those put up in unit container and bearing a registered brand name]NIL GST.

Notification 2/2017 CT (R) , Dtd. 28/06/2017