Yes, the law states you muct put every offense involving the law on your job application even if it was 60 years ago.
Yes
If it's your only DUI and it wasn't a felony DUI, yes.
A DUI conviction on your DMV driving record NEVER goes away. Your driving record is a compilatioon of your entire driving history. To be safe you should include it. If it is 20 years old and you haven't had any subsequent offenses it probably won't count against you after all this time, AND you may possibly get points for honesty from a future employer.
Yes.
You can, but you won't get hired to drive anything.
Well, personally i would put it down. Just make it VERY CLEAR that it was over a decade ago.
It may depend - but especially NOT if it was a DUI.
No
Be truthful ! They will have ways to find out anyway - so why lie ! If you say nothing - you could be working there for months before they find out - and you'll be instantly sacked !
Yes.
A DUI offense that occurred more than 10 years ago will not appear on your out-of-house/public driving record.