Question

1. 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 solution,
respectively. If you are given only red
litmus paper, how will you identify the
contents of each test tube?


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Answer 1

Answer:

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.

Explanation:

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Answer 2

ANSWER

ANSWERAdd 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.