Question

you have been provided with three test tubes one of them contains distilled water and one other two contains an acidic solution and basic solution respectively if you are given only one red litmus paper how with you will you identify the contain contents of each test tube​

Answer 1

Answer:

First if we place the red litmus paper in test tube containing distilled water it doesn't change it's colour.

When we place the litmus paper in test tube containing basic solution it's colour changes to blue.

Now, when we place the blue litmus paper in acidic solution it turns red.

It's the right answer.

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Answer 2

Answer:

BTS

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(i) Put the red litmus paper in all the test tubes, turn by turn. The solution which turns red litmus to blue will be a basic solution. The blue litmus paper formed here can now be used to test the acidic solution.

(ii) Put the blue litmus paper obtained above in the remaining two test-tubes, turn-by-turn. The solution which turns the blue litmus paper to red will be the acidic solution.

(iii) The solution which has no effect on any litmus paper will be neutral and hence it will be distilled water