Export of food grain or coarse grain into nepal

[31/08, 17:22] UTTAM ROY (Adv.): Export of food grain and coarse grain.....
Is it nil rated inter state supply
Or exempted inter state supply
Or export supply
Entry in 6A or 8A (GSTR1)
[31/08, 17:22] UTTAM ROY (Adv.)

Export supply/ zero rated supply
With igst or without igst...(lout or bond)
But here is none any option for nil rated or exempted goods supply..

Here is big confusion between nil rated goods and exempted goods
Both are same..
If is search nil rated goods or exempted goods
Same contained are displayed......
pls suggest me food grains are nil rated goods or exempted goods