How to differentiate between nil rated supply and exempt supply?

On searching HSN or SAC, rate of tax is 0%

1. For Goods, if it pertains to Notification No-  02/2017-Central Tax (Rate) dated 28.06.2017as amended

2. For Services, if it pertains to Notification No-  12/2017-Central Tax (Rate) dated 28.06.2017as amended

If above two conditions (1 or 2 ) are satisfied than it is EXEMPT supply

Otherwise it is NIL rate supply. 

Originally posted by : sabyasachi mukherjee
	You can easily differentiate between nill rated and exempt one. HSN CODE IS SEPERATE.

Please elaborate