Q. Which of the following has the lowest pH?
✅ Correct Answer: (A)
Vinegar
Explanation: Vinegar contains acetic acid and has a pH around 2–3, making it more acidic than milk (pH ~6.5), water (pH 7), or soap solution (pH > 8).
Explanation by: Sikhar Chaudhary
Vinegar contains acetic acid and has a pH around 2–3, making it more acidic than milk (pH ~6.5), water (pH 7), or soap solution (pH > 8).