Question
Download Solution PDFWhich one of the following statements is NOT correct?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
pH Scale and Hydrogen Ion Concentration
- The pH scale is used to measure the hydrogen ion concentration in a solution.
- The scale typically ranges from 0 to 14, where:
- pH < 7 indicates an acidic solution.
- pH = 7 indicates a neutral solution.
- pH > 7 indicates a basic solution.
- The term "p" in pH stands for "potenz," which means "power" in German.
EXPLANATION:
- "A scale measuring hydrogen ion concentration in a solution is called pH scale" - This statement is correct as the pH scale measures the hydrogen ion concentration.
- "The higher the hydrogen ion concentration in a solution, higher is its pH" - This statement is NOT correct. In fact, higher hydrogen ion concentration corresponds to a LOWER pH (more acidic), not higher pH.
- "We can measure pH generally from 0 to 14 on a pH scale" - This statement is correct as the pH scale typically ranges from 0 to 14.
- "The 'p' in pH stands for 'potenz' in German meaning power" - This statement is correct as "p" in pH indeed stands for "potenz."
- Thus, the statement in Option 2 is incorrect.
Therefore, the correct answer is The higher the hydrogen ion concentration in a solution, higher is its pH.
Last updated on Jun 18, 2025
->UPSC has extended the UPSC NDA 2 Registration Date till 20th June 2025.
-> A total of 406 vacancies have been announced for NDA 2 Exam 2025.
->The NDA exam date 2025 has been announced. The written examination will be held on 14th September 2025.
-> The selection process for the NDA exam includes a Written Exam and SSB Interview.
-> Candidates who get successful selection under UPSC NDA will get a salary range between Rs. 15,600 to Rs. 39,100.
-> Candidates must go through the NDA previous year question paper. Attempting the NDA mock test is also essential.