In a solution, blue litmus turns red and universal indicator shows red colour. What is the nature of the solution?
Answer and explanation
Correct answer: Acidic
Blue litmus turning red is the characteristic test for an acidic solution. The red colour of a universal indicator also corresponds to a low pH, generally indicating strong acidity rather than neutrality or basicity. A neutral solution would leave litmus unchanged and show a colour near pH 7, while a basic solution would turn red litmus blue. Therefore option A is correct.
Frequently asked questions
What is the correct answer to this question?
Acidic
Why is this the correct answer?
Blue litmus turning red is the characteristic test for an acidic solution. The red colour of a universal indicator also corresponds to a low pH, generally indicating strong acidity rather than neutrality or basicity. A neutral solution would leave litmus unchanged and show a colour near pH 7, while a basic solution would turn red litmus blue. Therefore option A is correct.
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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