Question

1. which test would show positive results for orange juice?

benedict test
lugol test
biuret test
sudan red test

Explanation:

Orange juice contains high levels of reducing sugars (like fructose and glucose). The Benedict test detects reducing sugars, producing a color change from blue to green/yellow/orange/red in their presence. The Lugol test detects starch (not abundant in orange juice), the Biuret test detects proteins, and the Sudan Red test detects lipids, none of which are the main relevant component here.

Answer:

A. Benedict test