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Question : Starch in potatoes reacts with _____, turning to a blue colour.

Option 1: fluorine

Option 2: bromine

Option 3: iodine

Option 4: chlorine


Team Careers360 8th Jan, 2024
Answer (1)
Team Careers360 13th Jan, 2024

Correct Answer: iodine


Solution : The correct option is iodine .

The starch in potatoes reacts with iodine, turning to a blue-black colour. This reaction is commonly used in science experiments and is known as the iodine test for starch. When iodine comes in contact with starch, it forms a complex that exhibits this distinctive blue-black colour, providing a visual indicator of the presence of starch.

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