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We 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 we are given only red litmus paper, how will we identify the content of each test tube?


We can get this , if we touched red litmus to basic solution it should turn blue and in acidic solution it should not change colour
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If we drop the red litmus to distilled water it turns in to blue.if red litmus is touched to acidic it do not change.if red litmus touched to basic solution then it changes to blue
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