Blue litmus turns red in which type of solution?
Answer and explanation
Correct answer: Acidic solution
Litmus is a natural acid-base indicator. In an acidic solution, the concentration of hydrogen ions is sufficiently high to change blue litmus paper to red. This is the characteristic test used to identify acidity. Basic solutions generally turn red litmus blue, while a neutral solution causes no such litmus change; soap solution is usually basic rather than acidic. Therefore option A is the correct answer.
Frequently asked questions
What is the correct answer to this question?
Acidic solution
Why is this the correct answer?
Litmus is a natural acid-base indicator. In an acidic solution, the concentration of hydrogen ions is sufficiently high to change blue litmus paper to red. This is the characteristic test used to identify acidity. Basic solutions generally turn red litmus blue, while a neutral solution causes no such litmus change; soap solution is usually basic rather than acidic. Therefore option A is the correct answer.
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.
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