Question

When Fehlings solution is added to urine of suspected patients of diabetes mellitus,and heated,the colour would change from * O White to blue black O Blue green to deep brick red O White to yellow O Yellow to orange​

Answer 1

Explanation:

When a sample of urine is boiled with these reagents, the glucose present in the sample reduces the copper sulphate in Fehling's solution and Benedict's solution. This changes the colour of the solution. Depending on the levels of glucose in the solution, the colours vary from brick-red, green to yellow precipitates.