Multiple choice

The presence of starch can be detected by using iodine. Iodine gives starch ____________ colour.

  1. red

  2. blue-black

  3. green

  4. brown

  5. yelllow

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

This is the correct option. Iodine gives starch blue-black colour. Amylose in starch is responsible for the formation of a deep blue-black colour in the presence of iodine.