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You are provided with three test tubes A" B and C which contain distilled water, acidic solution and basic solution respectively. If you are given blue litmus paper only, how will you identify the contents of each test tube ? |
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Answer» Put blue litmus paper in all the three test tubes. In one test tube, it will turn red that is acid. Now Put red Litmus paper in other two test tubes. The one which turns blue is base and the third one is distilled water, as it turned paper neither red nor blue. |
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