Question

What substances found in onion ?

Answer 1

The synthase enzyme converts the amino acidssulfoxides of the onion into sulfenic acid. The unstable sulfenic acid rearranges itself into syn-ropanethial-S-oxide. Syn-propanethial-S-oxide gets into the air and comes in contact with our eyes. The lachrymal glands become irritated and produces the tears!

Answer 2

Hey

onion consists of sulphur acid

HOPE it helps you