Bases turn red litmus blue because what is their nature?
Answer and explanation
Correct answer: Basic
Red litmus is an indicator used to recognise a basic medium. A base changes red litmus paper to blue, while an acid produces the opposite blue-to-red change. Therefore the substance described has basic nature, so option A is correct. Neutral solutions normally do not cause this characteristic change, and gaseous describes a state rather than acid-base nature.
Frequently asked questions
What is the correct answer to this question?
Basic
Why is this the correct answer?
Red litmus is an indicator used to recognise a basic medium. A base changes red litmus paper to blue, while an acid produces the opposite blue-to-red change. Therefore the substance described has basic nature, so option A is correct. Neutral solutions normally do not cause this characteristic change, and gaseous describes a state rather than acid-base nature.
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.
