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    Question

    Irritation of eye due to cutting onion is due to

    presence of:
    A Benzoic acid Correct Answer Incorrect Answer
    B syn-propanethial-S-oxide Correct Answer Incorrect Answer
    C isothiocyanate Correct Answer Incorrect Answer
    D Disulphide Correct Answer Incorrect Answer
    E Sinigrin Correct Answer Incorrect Answer

    Solution

    Onions produce the chemical irritant known as syn-propanethial-S-oxide. It stimulates the eyes' lachrymal glands so they release tears.

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