Question

While using iodine in the labratory some drops of iodine fell on simi's socksand some fell on her teacher's saree the drop of iodine on the saree turned blue black while ther colour did not change on the socks what can be the possible reason?

Answer 1

Answer:

It is possible because of starch .

Explanation:

Iodine solution turned blue-black because the saree worn by teacher must have contained starch and starch turns blue-black when exposed to iodine solution. Socks would have been free from starch that's why her socks did not change color. 

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