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Questions and Answers
What color does the solution turn when starch reacts with a solution of iodine in potassium iodide?
Which step is NOT part of the procedure to test for starch using iodine solution?
What type of compound is iodine in the context of this reaction?
Which substance is needed to be present for the iodine to react with starch?
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If a food sample fails to produce a blue-black color when tested with iodine solution, what can be inferred?
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Study Notes
Testing for Starch
- Starch reacts with a solution of iodine in potassium iodide to produce a blue-black colour.
- To test for starch, a solution or food is placed in a spotting tray or test tube.
- A few drops of iodine solution are added to the solution or food.
- The presence of starch is indicated by a blue-black colour.
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Description
Learn how to test for the presence of starch using iodine solution. Follow the steps of adding iodine solution to a sample and observing the formation of a blue-black color.
