alleryThe pH of human blood lies between
A8.5 and 9.0 (highly alkaline)
B5.5 and 6.0 (slightly acidic)
C7.3 and 7.45 (slightly alkaline)
D4.0 and 5.0 (highly acidic)
Answer & Solution
Correct answer: C. 7.3 and 7.45 (slightly alkaline)
1. Section 7.3 lists blood pH explicitly.
2. Blood is slightly alkaline, pH about 7.3 to 7.45.
3. Neutral pH is 7; numbers above 7 are alkaline.
4. So option A is correct.
_Source: Selina Concise Biology Class 10, Ch 7 The Circulatory System (Mistral OCR'd PDF), section 7.3 pH_
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