Question

What happen when starch is treated with concentrated sulphuric acid

Answer 1

Explanation:

Method: Add 2–3 drops of Lugol's iodine solution to 5 mL of the solution to be tested. Starch produces a blue-black color. A positive test for glycogen is a brown-blue color.Method: Add 2–3 drops of Lugol's iodine solution to 5 mL of the solution to be tested. Starch produces a blue-black color. A positive test for glycogen is a brown-blue color.