pH of blood is

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7·0

6·5

7·15

7·40

Answer is Right!

Answer is Wrong!

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UPSC CISF-AC-EXE – 2021

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The pH of healthy human blood is maintained within a narrow range of 7.35 to 7.45. This slightly alkaline range is crucial for proper metabolic function. Option D, 7.40, falls within this normal range and is often cited as an average value.

pH measures the acidity or alkalinity of a solution.
A pH of 7 is neutral. Below 7 is acidic, and above 7 is alkaline (basic).
Maintaining blood pH homeostasis is vital for physiological processes.

Deviations from the normal blood pH range can lead to serious health conditions such as acidosis (pH below 7.35) or alkalosis (pH above 7.45). The body has buffer systems to help maintain this narrow pH range.

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