Sugar, being a simple carbohydrate, does not react with iodine solution, which is used to test for starch. Iodine turns blue-black in the presence of starch but not in the presence of sugar.
Sugar is an example of Carbohydrates. Sugar is tested with iodine solution but it does not change to blue back colour. what can be a possible reason?
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The reason sugar does not change color with iodine solution is that iodine is specifically used to test for the presence of starch, not simple carbohydrates like sugar. When iodine interacts with starch, it forms a blue-black complex, indicating the presence of starch. Since sugar is a simple carbohydrate and does not contain the amylose or amylopectin found in starch, it does not react with iodine and thus does not change color.
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