Question

which color change represents a positive reaction for the presence of sugar using the benedicts test? multiple choice blue to orange green to blue yellow to clear brown to blue - black

Explanation:

Benedict's solution is blue. In the presence of sugar, a redox reaction occurs. The copper - II ions in Benedict's solution are reduced to copper - I oxide, which gives colors ranging from green (low sugar concentration) to orange - red (high sugar concentration). So a blue to orange color change indicates the presence of sugar.

Answer:

A. blue to orange