An aqueous solution turns litmus red. The pH of the solution could be

An aqueous solution turns litmus red. The pH of the solution could be

• A. 14
• B. 11
• C. 8
• D. 4

Answer: (D)

Litmus turning red indicates an acidic solution. Acids have a pH below 7 on the pH scale, with lower numbers meaning stronger acidity. Among the given values, only the one that lies in the acidic range matches red litmus, while higher values correspond to neutral or basic solutions (which would turn litmus blue). So the correct choice is the option representing an acidic pH.

Litmus turning red indicates an acidic solution. Acids have a pH below 7 on the pH scale, with lower numbers meaning stronger acidity. Among the given values, only the one that lies in the acidic range matches red litmus, while higher values correspond to neutral or basic solutions (which would turn litmus blue). So the correct choice is the option representing an acidic pH.