While using iodine in the laboratory, some drops of iodine fell on Paheli’s socks and some fell on her teacher’s saree. The drops of iodine on the saree turned blue black while their colour did not change on the socks. What can be the possible reason?
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11
Answer:
The drops of iodine are used to detect the presence of starch in the food items. The possible reason for the colour change of saree is due to the presence of starch. Paheli’s socks did not have starch on it, thereby their colour did not change.
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4
Answer:
On the saree it turned blue black because on that saree there was presence of starch where as in the socks there was no starch
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