Question

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

Answer 1

Answer:

On litmus paper, the three solutions in the test tubes are poured separately. The solution which turns red litmus to blue contains a basic solution. 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.

Answer 2

Explanation:

Take three test tubes and label them as A , B,C on the red litmus paper litmus paper separately. The solution of test tube which turn red litmus paper to blue contain a base.

Now,the remaining two test tubes contain acid and distilled water . use above blue litmus paper to test solution of remaining two test tubes.

add one drop of solution from two test tubes on blue litmus paper separately.

The solution of a test tube which turns blue litmus paper to red contain acid.

The solution of test tube which does not change either red or blue litmus paper contain distilled water.