No. Moto Z2 Play does not support CDMA network.
You do not have to do anything special to avail Jio offer on Moto Z2 Play. Just when you start using the mobile, insert your Jio sim and it will get activated by the Jio company itself.
Yes, it does support OTG.
Yes, but I liked Google Duo more for video calling on Moto Z2 Play. Try it.
Yes, Moto Z2 Play does have fm radio.