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A doctor notes the human body works only within a narrow pH range, roughly:
A9.0 to 9.8
B7.0 to 7.8
C3.0 to 3.8
D5.0 to 5.8
Answer & Solution
Correct answer: B. 7.0 to 7.8
1. Living organisms survive only in a narrow pH band.
2. The body band sits just above neutral.
3. That band is 7.0 to 7.8.
_Source: syllabus Science Class X, Chapter 2, Acids, Bases and Salts._
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