Which of the Following Body Fluids Has the Lowest PH

Question

Which of the following body fluids has the lowest pH?
A) arterial blood
B) stomach acid
C) venous blood
D) saliva

Accepted Answer

Stomach acid has the lowest pH among the given choices, with a pH range of 1.5-3.5. Arterial blood has a pH range of 7.35-7.45, venous blood has a slightly lower pH of 7.31-7.41, and saliva has a pH range of 6.5-7.5.