why we have tears when we cut oniones
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just because of chemical reaction of it. it produce syn-propanethial-s-oxid by this oxidation tears will come out .
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aksh61:
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Answer :
The glands in a onion make a chemical substance named as syn-propanethial-S-oxide. When we cut onions, these substances' tiny molecular drops spread in air and they stimulate the lachrymal glands present in eyes. Then we have tears.
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