Question

A few drops of iodine solution were added to potato slice. The potato slice turned blue
black in colour. This indicates potato has.
I
a) proteins
b) glucose
c) starch
d) fats​

Answer 1

Answer:

Correct option is

c

Starch

Biochemical test of starch is the iodine test. Starch comprises two types of molecules Amylose and Amylopectin. Of these amylose participates in iodine test. In iodine test, iodine gets entangled in amylose and starch turns blue black