Define universal indicator?

A universal indicator is a mixture of several different indicators that changes color in response to changes in pH levels. It is used to determine the acidity or alkalinity of a solution by observing the color change. Universal indicators can provide a more accurate and comprehensive measurement of pH compared to single indicators.

A universal indicator is a mixture of several indicators that gives a wide range of colours depending on the pH of the solution. It is a convenient way to indicate the approximate pH of a solution without having to use several different indicators. The colour of the universal indicator changes gradually from red in acidic solutions to violet in neutral solutions to green in alkaline solutions.

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