Q
If iodine is added to a peeled potato, then it will turn:
JE CBT-1, 2-Jun-19 S-1
2019
✓ Answer:
B
Blue-black
When iodine is added to a peeled potato, it turns black or blue-black in colour because potatoes contain starch. Iodine acts as an indicator for starch, and when it reacts with starch, it forms a dark-coloured complex. This reaction is commonly used in biology and chemistry to test for the presence of starch in food items.