Human body works in the pH range of:

6.8 - 7.2

7.0 - 7.8

6.5 - 7.5

7.5 - 8.0

Answer is Right!

Answer is Wrong!

This question was previously asked in

UPSC NDA-1 – 2024

Download PDF Attempt Online

The human body, particularly blood, maintains a very narrow pH range for proper functioning.

The normal pH range of human blood is slightly alkaline, typically between 7.35 and 7.45. Among the given options, the range of 7.0 – 7.8 is the one that correctly encompasses the typical physiological pH range.

Significant deviations from this narrow pH range can lead to severe health problems. For example, a pH below 7.35 is called acidosis, and a pH above 7.45 is called alkalosis. The body uses buffer systems (like the bicarbonate buffer system) to maintain this delicate pH balance.

Join Our Telegram Channel

More similar MCQ questions for Exam preparation:-