Question

why do we get tears while we cut a onion?

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Answer 1

Answer:

Onions produce the chemical irritant known as syn-propanethial-S-oxide. It stimulates the eyes' lachrymal glands so they release tears. Scientists used to blame the enzyme allinase for the instability of substances in a cut onion. ... The synthase enzyme converts the amino acids sulfoxides of the onion into sulfenic acid.

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Answer 2

this one I learnt in my gk book

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When we cut onion there is a kind of oil/chemical(syn-propanethial-S-oxide)which evaporates and irritates our eyes and makes our tear gland shed tears .

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