If a solution has pH 3, what effect will it have on blue litmus paper?
Answer and explanation
Correct answer: It will turn red
The pH scale indicates the acidic or basic nature of a solution: pH 7 is neutral, values below 7 are acidic, and values above 7 are basic. Since pH 3 is below 7, this solution is acidic. Acids change blue litmus to red, so option A is correct. Options B, C, and D do not describe the standard blue-litmus response to an acidic solution.
Frequently asked questions
What is the correct answer to this question?
It will turn red
Why is this the correct answer?
The pH scale indicates the acidic or basic nature of a solution: pH 7 is neutral, values below 7 are acidic, and values above 7 are basic. Since pH 3 is below 7, this solution is acidic. Acids change blue litmus to red, so option A is correct. Options B, C, and D do not describe the standard blue-litmus response to an acidic solution.
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.
