Question

Which one of the following can be used to check the acidity of the salt solution in laboratories?

• A. Litmus paper
• B. Brown paper
• C. Filter paper
• D. Butter paper

Answer 1

The correct option is A Litmus paper

If the solution is acidic, the color of the litmus paper changes from blue to red and if solution is basic/alkaline, the color of the litmus paper changes from red to blue.