Multiple choice

Which of the following is used to test the presence of starch in a potato?

  1. Water

  2. Caustic soda

  3. Iodine

  4. Copper sulphate

  5. Sunlight

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

By adding a few drops of iodine solution to a potato we can test the presence of starch in it. Blue-black colour indicates the presence of starch in it.