Gst on freight included in invoice

If a Vendor is raising an invoice for a Material Supply which includes Freight/Delivery Cost from his Warehouse to the Customer Premises.

1. Does he have to show the Freight Cost Seperately.

2. If he has to show the Freight Cost Seperately. Then what would be the Rate to be applied.

3. Would the rate be the same as the material being transported or seperate rate needs to be charged.