Chemical tests for urine protein and glucose

Steps:

• Identify standard tests: biuret for protein (blue to mauve/purple if positive) and Benedict's for glucose (blue to red if positive).
• Examine choices for colors indicating both positives: mauve for protein and red for glucose.
• Note positions: second color for protein test, first for glucose test in relevant options.
• Select option with both mauve and red, plus neutral results for other tests.

Why B is correct:

• Biuret test turns mauve with protein, and Benedict's turns red with glucose, matching B's colors for positives.

Why the others are wrong:

• A: Blue indicates negative glucose in Benedict's test.
• C: Blue indicates negative glucose in Benedict's test.
• D: Pale blue indicates negative protein in biuret test.

Final answer: B