Question

why we are teared when we cut the onion

Answer 1

when we cut an onion it releases a gas called Propanethiol S-oxide. when it is mixed with certain enzymes in the onion, it creates sulfur gas. so when it goes into our eyes, it causes irritation.

Answer 2

when we cut an onion it releases a gas called propanethiol S-oxide when mixed with certain enzymes in the onion it creates a sulfur gas these gas then get to our eyes and create a mild acid which irritates our eyes and we are teared when we cut an onino