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Standard XI
Chemistry
Chemical Properties of Glucose
What is Seliw...
Question
What is Seliwanoff's Test?
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Solution
Seliwanoff’s test
Seliwanoff's test is used to differentiate between aldose and ketose, i.e., it helps to detect the presence of aldo sugar and keto sugar.
Seliwanoff's reagent is a mixture of resorcinol and concentrated hydrochloric acid.
Seliwanoff’s test with aldose and ketose
Ketose sugars react with the Seliwanoff's reagent to give immediately a deep cherry red color.
Aldose sugars react with the Seliwanoff's reagent to give faint pink color which intensifies with time.
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