Which of the following is used to detect the presence of starch in food items?

Dilute iodine solution

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Copper sulphate solution

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Baking powder

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Lime water

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Solution

The correct option is A Dilute iodine solution
Food items like rice, potato, bread, etc., are rich in starch. After adding a few drops of dilute iodine solution to the sample of these food items, it develops a deep blue or blue-black colour. This confirms the presence of starch in the sample.

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