Question

When 2 to 3 drops of Benedict’s reagent are added to the urine sample and heated gently it turns into yellow. This color change indicates:
A. Urine contains 2% glucose
B. Urine contains 0.5% glucose
C. Urine contains 1.5% glucose
D. Urine contains 1% glucose

Answer 1

Hint: Benedict's reagent is a chemical reagent. It is a complex mixture of sodium citrate, sodium carbonate, and copper(II) sulfate pentahydrate. It is frequently utilized instead of Fehling's solution to identify the presence of decreasing sugars. The presence of other diminishing substances likewise gives a positive outcome.

Step by step answer:
-The shade of the solution after playing out Benedict’s test speaks to the measure of glucose present in the given solution.
-On the off chance that the solution turns green, it demonstrates the presence of 0.1 to 0.5 % glucose.
-On the off chance that the solution turns yellow, it shows the presence of 0.5 to 1% glucose.
-On the off chance that the solution turns orange, it shows the presence of 1 to 1.5% glucose.
-On the off chance that the solution turns red, it shows the presence of 1.5 to 2% glucose.
-On the off chance that the solution has over 2% of glucose, at that point, the solution shows block red
So as the yellow tone can show a limit of 1% glucose the right choice is D.
Hence, the correct option is D

Additional Information:
Glycosuria is a condition wherein an individual's urine contains more sugar or glucose than it should. It ordinarily happens because of high glucose levels or kidney harm. Glycosuria is a typical side effect of both kinds 1 diabetes and type 2 diabetes. Renal glycosuria happens when an individual's kidneys are damaged. Normal glucose extends in urine: 0 to 0.8 mmol/l (0 to 15 mg/dL)Higher than typical degrees of glucose may happen with: Diabetes: Small increments in urine glucose levels after an enormous supper are not generally a reason for concern.

Note: By Benedict’s test the glucose percent is easily measured in this a reagent is used called Benedict's reagent. Benedict's reagent is a mixture of sodium citrate, sodium carbonate, and copper(II) sulfate pentahydrate.