The pH is defined as $\text{pH} = -\log_{10}[\text{H}^+]$, where $[\text{H}^+]$ is the molar concentration of hydrogen ions. A pH of 7 is neutral, below 7 is acidic, and above 7 is basic.
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NEET UG 2024 — Chemistry Physical Chemistry
medium
mcq
2024
Official previous-year question
Verified 30 May 2026.
Question
The pH of a solution is defined as:
Options
- A
$\text{pH} = -\log[\text{H}^+]$
- B
$\text{pH} = \log[\text{H}^+]$
- C
$\text{pH} = -\ln[\text{H}^+]$
- D
$\text{pH} = \frac{1}{[\text{H}^+]}$
Solution
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