Question

When we cut onion then why in our eyes tears

Answer 1

It turns out when you cut an onion, it releases a gas called, ready for this, Propanethiol S-oxide. When mixed with certain enzymes in the onion, it creates a sulfur gas. These gases then get to your eyes and create a mild acid which irritates the eyes

Answer 2

When we cut onion it release an gas called propanitheol S oxide when mixed with certain enzymes in the onion create sulphur gas . diesel gases go in our eyes and create mailed acid which irritates the eyes .