Question

Which one of the following can be used to check the pH of any solution?

• A. Litmus paper
• B. Turmeric 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 the solution is basic/alkaline, the color of the litmus paper changes from red to blue. Turmeric changes its colour to red in basic medium but does not show any colour change in acidic medium. Hence turmeric is not used.