Does a 1996 Ford F-250 have passenger airbag?

No, passenger-side airbags were not standard in 1996 Ford F-250 trucks. They may have been available as an option on some models or trim levels, but it wasn't standard equipment. To know for sure if a specific 1996 F-250 has a passenger-side airbag, you'd need to check the vehicle's documentation or look for the airbag indicator light on the dashboard (though the absence of a light doesn't guarantee the absence of an airbag).