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Biomolecules — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryBiomolecules1 Mark
Question
White prepipitate is formed in.
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Answer

In Millon's test, first the compound $($to be tested$)$ i.e, protein is nitrated by $HNO_3​$ and then complexed with $Hg(I)$ and $Hg(II)$ ions. A red precipitate is obtained. However, if the protein contains tyrosine, sometimes initially a white precipitate is formed that turns red on heating.

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