Question

5. You have been provided with three test tubes.
One of them contains distilled water and the other two
have an acidic solution and a basic solution respectively.
If you are given only red litmus paper, how will you
identify the contents of each test tube?​

Answer 1

Answer:

firstly we test three tubes with the help of litmus paper

• in case of distilled water , red litmus paper doesn't shows purple colour , because it is neutral
• in case of acidic solution , red litmus paper it will remain red
• in case of basic solution it will show blue colour ...

Answer 2

Explanation:

Add few drops of solution from all three test tubes on the red litmus paper separately. The solution which turns red litmus to blue contains basic solution. Use this blue litmus paper to test the solutions in other two test tubes. The solution from the test tube which turns blue litmus paper to red will be the acidic solution and solution of the test tube which do not change either red or blue litmus paper contain water.