Question

when using iki indicator, an inky black colored solution is a positive test result for _____.
proteins
reducing sugars
starch
dna

Explanation:

The IKI (iodine - potassium iodide) indicator specifically reacts with starch. When starch is present, the IKI solution turns into an inky - black color. Proteins are tested with other reagents like biuret, reducing sugars with Benedict's solution, and DNA with methyl green.

Answer:

C. starch