White precipitate is formed in
Millon's test
ninhydrin test
biuret test
xanthoprotic test
A.
Millon's test
In Millon's test, the first compound to be tested, i.e. protein is nitrated using HNO3 and then complexed with Hg(I) and Hg(II) ions.
A red precipitate is obtained. However, if the protein contains tyrosine, initially a white precipitate is formed that turns red on heating.
The compound, which give a positive ninhydrin test and a negative Benedict's solution test, is
a monosaccharide
a disaccharide
a lipid
a protein
Which of the following can absorb over 90% of its own mass of water and also does not stick to wounds?
Saran
Thiokol
Rayon
Gun cotton
During conversion of glucose into glucose cyanohydrin, which functional group/atom of glucose is replaced?
Hydrogen
Aldehydic group
Primary alcoholic group
Secondary alcoholic, group
What type of sugar molecule is present in DNA?
D-3-deoxyribose
D-ribose
D-2-deoxyribose
D-glucopyranose
