Multiple choice

Which solution is used to test if starch is present in food?

  1. iodine

  2. saltwater

  3. water

  4. juice

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Iodine solution is the standard chemical indicator used to detect the presence of starch in food substances. In the presence of starch, iodine changes from its original yellowish-brown color to a distinct blue-black. Other liquids like saltwater, water, or juice do not react with starch in this way.