yes
Yea it will KILL YOU!
No, unless they are unripe
Not toxic, but it may be dangerous.
Raw pineapple must be dipped in salty water if it is going to be eaten fresh. I don't think it's toxic, but the fresh pineapple has a certain bacteria in it that makes your throat hurt very badly.
Bleach alone is toxic. So mixing it with urine, might dilute it if anything
Main end product is chloroamine. It is a toxic vapour
Chloroamine is produced by that. It is a very toxic vapour
Mixing bleach with other chemicals can release Chlorine gas, which is very toxic. Don't mix it with anything but water.
No, and in fact they won't mix.
Mixing bleach and ammonia is extremely dangerous, since toxic vapors will be produced. Chloramine vapor, with a potential for hydrazine formation is very toxic
I dont think mixing potatoes with tomatoes is bad. But I have read on an article that frying tomatoes is very bad and toxic. Frying tomatoes makes them extremely acidic.
In general, mixing acids with chlorine solutions produces toxic gaseous chlorine.