Question -
Answer -
There is only red litmus paper available in order to identify what is there in each test tube. How will you find out what is in each of the test tubes?
We can identify the content in each of the test tubes using red litmus paper. This can be done by noticing the colour change of the red litmus paper.
• If the red litmus paper changes to blue colour the solution is a basic solution (or alkaline).
• If the red litmus paper stays red, then the solution is an acid.
• If the red litmus paper changes to purple, then it indicates that the solution is near neutral (distilled water in this case)