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Question
A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates that rice water contains
Options
complex proteins
simple proteins
fats
starch
Solution
starch
Explanation -
Amylose and Amylopectin are the two components of starch. Amylose interacts with iodine to generate a blue colour complex when iodine is added to starch-containing water. When Iodine is added to this solution, it becomes blue-black, indicating the presence of starch in the rice water.
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