What is the general nature of a solution when its pH is greater than 7?
Answer and explanation
Correct answer: Basic
The pH scale describes the acidic or basic nature of an aqueous solution. A pH of 7 is neutral; values below 7 indicate acidity, while values above 7 indicate increasing basicity because hydroxide-ion concentration is relatively greater. Therefore, a solution with pH greater than 7 is basic or alkaline, so option B is correct. Option A applies below 7, option C applies at 7, and volatility is unrelated to pH.
Frequently asked questions
What is the correct answer to this question?
Basic
Why is this the correct answer?
The pH scale describes the acidic or basic nature of an aqueous solution. A pH of 7 is neutral; values below 7 indicate acidity, while values above 7 indicate increasing basicity because hydroxide-ion concentration is relatively greater. Therefore, a solution with pH greater than 7 is basic or alkaline, so option B is correct. Option A applies below 7, option C applies at 7, and volatility is unrelated to 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.
