Multiple choice

What is pH of saliva in human beings?

  1. 8.0 - 10.0

  2. 7.5 - 8.0

  3. 7.5 - 9.0

  4. 6.7 - 6.9

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Saliva of humans is slightly acidic so as to inhibit the action of harmful microbes. Its pH range is 6.7 - 6.9.