Question

what is the iodine test?

Answer 1

is used to test for the presence of starch. Starch turns into an intense "blue-black" colour upon addition of aqueous solutions of the triiodide anion, due to the formation of an intermolecular charge-transfer complex. In the absence of starch, the brown color of the aqueous solution remains.

Answer 2

Answer:

it is used to indicate the presence of starch in a solution . A positive result will indicate a blue/black solution while its absence indicates a brown color.

Explanation:

https://chem.libretexts.org/Bookshelves/Biological_Chemistry/Supplemental_Modules_(Biological_Chemistry)/Carbohydrates/Case_Studies/Starch_and_Iodine