Question

Iodine test is used to detect
A) Carbohydrate
B) Fat
C) Protein
D) Cholesterol

Answer 1

A) Carbohydrates. The iodine test is used to test for the presence of starch i.e. carbohydrates. 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.

Answer 2

Answer:

Iodine test is used to detect Carbohydrate.

Explanation:

• The iodine test is used to check the availability of starch-like carbohydrates in the sample.
• Starch changes to a deep "blue-black" color when an aqueous solution of triiodide anion is added due to the formation of an intermolecular charge transfer component (complex). Therefore, the iodine test is used to detect carbohydrates.