You convulse. Your stomach does its best to excrete it from your tract. You won't die, you do eat the remnants of it everyday after all.
you die...
There were two Ajax. Ajax Oileades and Ajax the greater.
When odysseus recieves the armor Ajax gets jealous, but Odysseues needed it more. Ajax dies during the battle in which the armor is used.
You Die
you die
pain
Nothing happens
You can get chemical burns along your throat and stomach if you swallow lye.
You burp bubbles
It depends on how much you swallow. If it is a large amount, you could get diarrhea and/or vomit.
Mold grows in your tummy
This too will pass.