dorji has a few bottle of soft drink in drink in his restraurant. but unfortunately these are not labelled.he has to serve the drinks on the demand of customers.one customers wants acidic drink another want basic and third one wants neutral drink.how will dorji decide which drink is to be served to whom
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By seeing their physical properties
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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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