The iodine turned blue-black on the saree because it likely contained starch, which reacts with iodine. The socks, however, may not have starch, so the iodine did not change color.
While using iodine in the laboratory, a few drops of iodine fell on Mishti’s socks and a few fell on her teacher’s saree. The drops of iodine on the saree turned blue-black while the colour on the socks did not change. What can be a possible reason?
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The color change of iodine to blue-black on the teacher’s saree suggests that the saree fabric contains starch, which reacts with iodine to form a blue-black complex. This is a common test for starch presence. In contrast, the iodine on Mishti’s socks did not change color because the socks likely do not contain starch. Different materials react differently to iodine based on their chemical composition. Understanding these reactions is important in both laboratory experiments and in practical applications, such as identifying the presence of starch in various substances.
For more CBSE Class 6 Science Curiosity Chapter 3 Mindful Eating: A Path to a Healthy Body Extra Questions & Answer:
https://www.tiwariacademy.com/ncert-solutions-class-6-science-curiosity-chapter-3/