What is the nature of a solution when its pH is greater than seven?
Answer and explanation
Correct answer: Basic
On the pH scale, a value of 7 is approximately neutral at room temperature, while a value greater than 7 indicates a basic or alkaline solution. Therefore option B is correct. Such a solution has relatively fewer hydrogen ions and greater hydroxide-ion influence, and it can turn red litmus blue. An acidic solution has pH below 7; neutral is around 7, and “salty” does not by itself define pH.
Frequently asked questions
What is the correct answer to this question?
Basic
Why is this the correct answer?
On the pH scale, a value of 7 is approximately neutral at room temperature, while a value greater than 7 indicates a basic or alkaline solution. Therefore option B is correct. Such a solution has relatively fewer hydrogen ions and greater hydroxide-ion influence, and it can turn red litmus blue. An acidic solution has pH below 7; neutral is around 7, and “salty” does not by itself define pH.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
