Is gst payable on expired pre-gst goods on which no itc was claimed/available?

No you are not required to pay gst..

As per section 17(5) ITC need to be reversed in case of good stole, written off. or disposed off..on which you have claim ITC before..

in your case you have not purchase this goods in gst period..it has been purchase before.so no need reverse..

as per my opinion..pls confirm with others one tym

Thank you Pritesh for the crisp explanation.

I eagerly await alternate/additional opinions from our contributors/experts.

As Per Section 7 (1) (c) and Schedule I 

In Your Case No GST Liability arise because Stock is a your business assets in which you have not claimed any ITC 

@ Ravi  @ Pritesh

Am concerned if Section 7 (1) d  CGST Act read with Point 4 of Schedule II will apply?

Point 4  Transfer of Business assets

a) where goods  

• forming part of assets of business
• are transferred or disposed off
• by or under the directions of the person carrying on the business
• so as no longer to form part of those assets, whether or not for a consideration,  

  such transfer or disposal is a supply of goods by the person;