What is the means of indicators

1.	What is the means of indicators
Answer» Substances which show the acidic or basic behavior of other substance by change in colour are known as indicator.Type of Indicator: There are many types of indicators. Some common types of indicators are\tNatural\tOlfactory Indicator\tSynthetic Indicator\tUniversal Indicator The substance which is used to check whether a substance is acidic or basic in nature.for example=litmus paper,methyl orange etc

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