GST query CS

Q.1 A gave goods to B for processing, A is registered,B is not, Both are from chennai. processing is liable @ 5%, goods received with challan on 11-07-2017, entries made on 12-7-2017, job work charges rs. 100000, how much is gst and who must pay?


Q.2 Refreshments were supplied on board in aircraft from chennai to delhi with a stop in hyderabad and refreshmnts were taken on board at hydrabad, Place of supply?