<prompt> What is the pH of amniotic fluid?6.5-77.1-7.37.4-7.87.8-8.1  <response>: Ans. B. 7.1-7.3Properties of amniotic fluid:a. pH:7.1-7.3b. Specific gravity: 1.010c. Osmolarity: 250mOsmoll--a sign of fetal maturity. 