Molisch Test – Presence of Carbohydrates, positive test is purple or purplish-red ring. Moores Test – Presence of Reducing Sugars, positive test is caramel-colored color. Phenylhyd... Molisch Test – Presence of Carbohydrates, positive test is purple or purplish-red ring. Moores Test – Presence of Reducing Sugars, positive test is caramel-colored color. Phenylhydrazine Test – Presence of carbonyl group, positive test is a yellow or orange crystalline precipitate will form. Seliwanoff's test – Presence of Ketose and Aldose, Positive Ketose Test is a red color will develop, for Aldose is no color change will be observed. Benedict's test – Presence of reducing sugars having a free aldehyde or ketone. Positive test is it forms a brick-red precipitate. Tollens' test – Presence of aldehyde and some ketone, positive test is a silver mirror will form on the walls of the test tube. Fehling's test – Presence of reducing sugars, positive test is it forms a brick-red precipitate. Nylander's test – Presence of reducing sugars, positive test is a black precipitate of metallic bismuth is formed. Schiff's test – Presence of Aldehyde, positive test is a magenta color will develop.
Understand the Problem
The question is providing a list of different chemical tests used to identify various types of carbohydrates and reducing sugars, along with their positive results. It aims to convey the specifics of each test's observation.
Answer
Detects carbohydrates; positive if purple or purplish-red ring forms.
Molisch test detects the presence of carbohydrates. A positive test is indicated by the formation of a purple or purplish-red ring.
Answer for screen readers
Molisch test detects the presence of carbohydrates. A positive test is indicated by the formation of a purple or purplish-red ring.
More Information
The Molisch test is a general test for carbohydrates which react with alpha-naphthol in the presence of sulfuric acid to form a colored complex. Hans Molisch, a Czech-Austrian botanist, discovered this test.
Sources
- Molisch's Test - Principle, Procedure, Reaction, & Reagent Preparation - byjus.com
- Molisch's Test - Principle, Procedure, Observation, Applications and ... - vedantu.com
- Molisch's test - Wikipedia - en.wikipedia.org
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