Hippuric acid is excreted when there is _____ in the diet.
Guanine
Benzoic acid
Glycine
Creatine
Hippuric acid is seen among the excretory products only when benzoic acid is present in the diet. It reacts with glycine to form hippuric acid. It is present in traces in human urine. Hence, the correct option is benzoic acid which is option 2.