Which of the following statements best describe testing of lactose sample?*       A. Lactose will quickly (less than 3 minutes) form a thin brick red precipitate in a Barfoed's test since it is a reducing monosaccharide. B. Lactose will give positive test using phenylhydrazine test and forms a needle shaped osazone C. Lactose when reacted with nitric acid and exposing to cold water bath will form insoluble white crystals. D. Lactose when tested using Seliwanoff's test will form a red colored complex.

Biochemistry
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ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
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Chapter1: Biochemistry: An Evolving Science
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Which of the following statements best describe testing of lactose sample?*
 
 
 
A. Lactose will quickly (less than 3 minutes) form a thin brick red precipitate in a Barfoed's test since it is a reducing monosaccharide.
B. Lactose will give positive test using phenylhydrazine test and forms a needle shaped osazone
C. Lactose when reacted with nitric acid and exposing to cold water bath will form insoluble white crystals.
D. Lactose when tested using Seliwanoff's test will form a red colored complex.
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