What happens when I “sign out” of my iPad?

Presumably you refer to signing-out of your AppleID account from iPad settings. As for the ultimate impact, this will largely depend upon whether or not you have another device signed-in to iCloud with your AppleID.

When you sign-out, you will be presented with a warning about saving a copy of your iCloud data. If you choose to keep a local copy, this data will be downloaded to your iPad. If you don’t choose to keep a local copy, all iCloud data will be deleted from your iPad during the sign-out process. However, you’ll need to consider what happens to the data in iCloud:

1) If you have any other devices (such as a Mac computer or an iPhone) that are signed-in to iCloud, your iCloud data is safely retained in iCloud storage.

2) If you don’t have any other devices (such as a Mac computer or iPhone) that remain signed-in to Cloud, all data stored in iCloud will be deleted. You have a limited period of time before all data will be permanently deleted - after which recovery will no longer be possible.

That gives me quite a bit to mull over. Kind of answers how I could do something that I've been trying to do since I got my iPad. You see, I have this problem. Every time I try to delete passwords that I no longer use and the accompanying user IDs, no sooner I have a deleted them then poof, they reappear.

I have tried turning off the key chain and every possible place that I can find it, but even doing so, as soon as I delete passwords and IDs, they reappear. Needless to say, it's a bit exasperating.

My question is, if I'm able to save from my iCloud data a copy downloaded to my iPad. Then I sign out from my Apple ID account. Where are you then be able to delete those IDs and passwords from my iPad?

Searches I may all over the Internet, I still haven't found a satisfactory answer. Hope you can help! Thanks