What solution should be used to test for the presence of starch in food?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. Iodine solution.
An iodine solution is used to test for the presence of starch in food. Normally a brownish-yellow liquid, the iodine solution reacts with the coiled structure of the starch molecule. If starch is present in the food sample, the iodine will change color to a dark blue or black. This distinct color change indicates a positive result. If no starch is present, the solution remains its original color.