What is the normal pH of blood plasma?

Correct option is C

Ans. (c) 7.4 Sol. The normal pH of human blood plasma is about 7.35 to 7.45, making it slightly alkaline. This narrow range is crucial for proper enzyme and metabolic function.
Explanation of each option:
· (a) 7.0 – Neutral, but lower than normal blood pH (indicates acidosis).
· (b) 7.2 – Still acidic for blood, below normal range.
· (c) 7.4 – Correct. Average pH of healthy blood plasma.
· (d) 7.8 – Too alkaline, indicates alkalosis.