Which of the following reagents is used for the test for starch?

Assessment: WAEC SSCE - Biology - 1990 (Objective) Subject: Biology

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Which of the following reagents is used for the test for starch?
Answer Details
The reagent used for the test for starch is iodine solution. Iodine solution reacts with the starch molecules to produce a blue-black color. This is due to the formation of an iodine-starch complex. Million’s reagent is used to test for tannins, Fehling’s solution is used to test for reducing sugars, Sudan III is used to test for lipids, and Benedict’s solution is used to test for the presence of reducing sugars, but not specifically for starch.
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