Which of the following is used to detect the presence of starch?
A
Iodine solution
B
Litmus paper
C
Bromine water
D
Fehling's solution
Correct Answer: Option A — Iodine solution
Explanation:
Iodine solution is used to detect the presence of starch, turning from brown to a deep blue-black color when it reacts with starch molecules. This simple test is commonly performed in biology and chemistry laboratories.