How will you identify 3 soft drinks which are not labelled, when one of them is acidic, other is basic and the third one is neutral in a restaurant?
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Dorji can decide with the help of litmus paper.
(i) The drink which would turn a red litmus to blue would be basic.
(ii) If the drink turns a blue litmus to red would be acidic.
(iii) The drink which would not affect both red and blue litmus would be neutral.
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