मानव शरीर में रक्त का pH मान कितना होता है?

उत्तर: (C) 7.4 — Human blood pH is 7.35-7.45 (slightly alkaline/basic). Maintaining this narrow range is critical for enzyme function and cellular processes. Acidosis (pH < 7.35) and alkalosis (pH > 7.45) are dangerou...