The reagent used to test the presence of starch in leaves is ____:

Q. The reagent used to test the presence of starch in leaves is ____:
Answer: Iodine solution
Notes: The Iodine test is used to test for the presence of starch. Iodine solution– here iodine dissolved in an aqueous solution of potassium iodide and reacts with the starch producing a purple black color.

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