Citric acid is present in free form in

A. Tamarind

B. Milk

C. Apple

D. Lemon

Answer: Option D

Solution(By Examveda Team)

Lemons, oranges, limes, and other citrus fruits naturally possess high concentrations of citric acid. The juice of the lemon is about 5% to 6% citric acid, which gives lemons a sour taste. In fact, Citric acid was first isolated in 1784 by the chemist Carl Wilhelm Scheele, who crystallized it from lemon juice.