If the fridge is a cold one, you're probably okay, but I wouldn't use it for sushi. You're looking for a temp at or below 42F or so, and it should be alright.
You can tell if tuna salad is bad by the way it smells, tastes, and looks. Tuna mixed with mayonnaise usually will not last for more than a couple of days.
yes
Assuming the tuna is fresh to begin with, probably a few hours to a day or so. Also, it will last longer sitting out if it is not in direct sunlight or by a window, stove, microwave, or heater, too.
This answer would be temperature dependant and determined by the salad ingredient that would spoil the quickest. For tuna salad, I would think the tuna would spoil quickest. This is from Bumblebees website regarding canned or pouched seafood; "once cans or pouches are opened, any unused contents should be immediately refrigerated and utilized within one to two days"
Real cheese dip will go bad in a few hours if left out of the refrigerator. If the cheese dip is in the refrigerator it should last about a week.
just over a few days and then it'll go bad
Only if the refrigerator is empty, if you have perishable food in it and you turn it off, it will all go bad. And saving energy is great, but if you have a empty refrigerator and you have it turned off continuously what is the point of having a refrigerator?
There are 2 good ways to do this. One is the smell. Fish smells fishy, yes, but bad fish smells really bad. There is a difference in the smell if it is bad. Second, the color. It will have a greenish color if it is really bad.
Cooked rice get bad after 2-3 days. For 2-3 days rice should be kept in refrigerator. If it is kept in open air it will get bad one the very same day.
It's good, but the Dr. Pepper will be flat when you drink it.
Bacteria can form on food left out of the refrigerator after an hour.
That depends how warm the food got in the freezer. If it didn't get above 40°F, it is probably safe. If the food is all thawed out and warm, throw it out. If you are unsure, don't eat it.