Dorji has a few bottles of soft drinks in his restaurant . But unfortunately these are not labelled . He has to serve the drinks on the demand of customers . One customer wants acidic drink , another wants basic and third one wants neutral drink . How will Dorji decide which drink is to be served to whom ?
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Explanation:
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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