Question

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 color did not change on the socks. what can be possible reason?

Answer 1

because teachers saree is polished with starch and when iodine solution is fell down on the teacher's saree then the saree turns blue black colour .
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but when the iodine solution is fell on the Paheli socks then it does not change its colour because socks does not polished with starch

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