Question

The $pH$ value of human blood is about

• A. $4.5$ to $5.6$
• B. $2.3$ to $3.4$
• C. $7.3$ to $7.5$
• D. $3.5$ to $4.3$

Answer 1

Answer: (C)

Human blood is slightly alkaline i.e. $pH$ of $7.3$ to $7.5(pH=7$ is neutral $)$.