Question

The following reaction is used for the detection of ...... adulteration in milk sample:
Milk sample + HCl + powder Resorcinol \(\xrightarrow{\text{boil for 5 min. in water bath}}\) Red coloration

• A. Urea
• B. Sugar
• C. Formaldehyde
• D. Water

Hint:

Use specific chemical reactions to detect sugar and other common adulterants in milk.

Answer 1

The Correct Option is B

Sugar adulteration in milk can be detected by adding hydrochloric acid (HCl) and resorcinol powder, then boiling the mixture. The formation of a red coloration indicates the presence of added sugar, which is used to falsely increase the density of milk.