No, the amperage pin configurations are different between a 15 amp and a 30 amp plug.
no
Do not do this.
Yes provided the adaptor, or the plug that is plugged in, has a 13A fuse.
Only if it is rated for 110V-220V. If it is rated for 110V only and you plug it into a 220V outlet, your device will be destroyed.
No, the plug and socket are incompatible, and even if you changed the plug, the unit would not operate on such alow voltage.
No, the amperage pin configurations are different between a 15 amp and a 30 amp plug.
yes
no
Do not do this.
No.
No, they are one and the same. I'm not an expert electrician but I do a lot of handy work around my house and local businesses. 110v, 115v, 120v and 125v are all the same. It has to do with voltage drops and increases due to supply and demand over varying distances from the power plant. Don't worry about the technical aspects of it all. In the same manner, 220v, 230v, 240v, and 250v are all the same also, just double of the original 110v. You probably shouldn't see 230v and 250v very much though. No biggie, whatever, all the 100's are the same and all the 200's are the same.
Yes
Should be ok provided you do not draw too much current.
Yes provided the adaptor, or the plug that is plugged in, has a 13A fuse.
Yes because it is of a higher rating. But make sure your equipment can take the rating too.
Only if it is rated for 110V-220V. If it is rated for 110V only and you plug it into a 220V outlet, your device will be destroyed.