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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