Which reagent is used to test for the presence of starch in a food substance?
- anhydrous copper (II) sulphate
- Fehling’s solution
-
iodine solution
- iron(III) oxide
- Million’s reagent
The correct answer is: C
Explanation
In the presence of starch, iodine changes its color from brown to blue-black or purple. So, iodine can be used to test the presence of starch.