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Question

Which of the following colour changes take place in an iodine test?

A
Brown to green
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B
Brown to violet
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C
Red to green
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D
Green to violet
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Solution

The correct option is B Brown to violet
Iodine test is done to confirm the presence of starch in a given food sample. Conversion of the colour of iodine from brown to violet indicates the presence of starch.

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