Final answer:
Benedict's test is a semi quantitative test used to detect the percentage of sugar in urine by measuring the intensity of the color change produced by reduced copper ions
Step-by-step explanation:
A semi-quantitative test provides an estimate or approximation of a certain parameter, rather than an exact measurement. In the case of Benedict's test, it is used to detect the percentage of sugar in urine. The test is based on the ability of reducing sugars to reduce Benedict's reagent in a mild alkaline medium. The intensity of the color change produced by the reduced copper ions can be used as a semi-quantitative measure of the amount of reducing sugar present.