NO!
no
Yes. The common safe time for frozen baked goods is one month.
Years.
no
no
Safe - quite probably Tasty - probably not.
no you will not get sick even if it was frozen for 2 years so no need to worry any thing below 5 degrees will slow bacteria down any thing below - 5 will stop bacteria dead the only thing is you can not freeze things twice no you wouldn't get sick because if something is frozen then it never turns rotten or spoiled
Microbiologically, it would be safe. Palatability is another question.
Most fish will remain safe to eat for up to six months. Fish that are fatty, such as salmon and tuna should keep for 2-3 months when frozen. Fish that are lean, such as cod and catfish will keep for up to 6 months when frozen. It would not be safe to eat fish that was frozen for 2 years because it would most likely be spoiled and could cause food poisoning.
If it's a deep freeze and was OK when you put it in, it would be edible even after several years.
Assuming it has remained constantly frozen for the three years hamburger is probably safe to eat. But, it may or may not taste good.
yes, as the ham was frozen the germs inside it will have died so you can eat it but after you have cooked it