Question

iodine solution is used to test the presence of (a) starch (b) fats (c) proteins (d) vitamin​

Answer 1

Answer:

Answer is (a).

explanation;

the iodine test is used to test the presence of starch. starch turns into an itense 'blue black' colour upon addition of aqueous solution of triiodine anion, due to the formation of an intermolecular charge transfer complex. in the absence of starch the brown colour of aqueous solution remains.

hope you will understand.