Question

The following reaction is used for the detection of ...... adulteration in milk sample:
Milk sample + \( \text{AgNO}_3 \) + drop of \( \text{K}_2\text{Cr}_2\text{O}_7 \rightarrow \) Yellow coloration

• A. Sodium carbonate
• B. Urea
• C. Sugar
• D. Hydrogen peroxide

Hint:

Regularly test for adulterants like sodium carbonate to ensure milk safety.

Answer 1

The Correct Option is A

The presence of sodium carbonate in milk can be detected using silver nitrate (AgNO₃) and potassium dichromate (K₂Cr₂O₇). The reaction produces a yellow color, indicating the presence of this alkaline adulterant.