how does litmus paper work ?
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litmus paper is an indicator which is found in two colours- red and blue
red is used to detect bas
when base is added to red indicator,the indicator changes its colour from red to blue
blue is used to detect acid
when acid is added to blue indicator,it changes its colour from blue to red
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Litmus Paper
Litmus PaperThe litmus test is performed by placing a small drop of sample onto the colored paper. Usually, litmus paper is either red or blue. Red paper turns blue when the pH is alkaline, while blue paper turns red when the pH turns acidic.
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