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

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Question

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

Options:

A . Dilute iodine solution

B . Copper sulphate solution

C . Baking powder

D . Lime water

Answer: Option A
:
A
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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