MCQ
White prepipitate is formed in.
- ✓Millon's test
- BNinhydrin test
- CBiuret test
- DXanthoprotic test
✓
Answer
Correct option: A.
Millon's test
In Millon's test, first the compound $($to be tested$)$ i.e, protein is nitrated by $\mathrm{HNO}_3$ and then complexed with $\text{Hg(I)}$ and $\text{Hg(II)}$ ions.
A red precipitate is obtained. However, if the protein contains tyrosine, sometimes initially a white precipitate is formed that turns red on heating.
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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