Solution:
The above statement is true.Phenolphthalein is a synthetic indicator. Indicators are classified into two categories: natural and synthetic(artificial) indicators. Phenolphthalein () is an artificial indicator of an organic compound of the phthalein family. It widely acts as an acid-base indicator. Phenolphthalein is colourless below pH 8.5 and turns pink to deep red above pH 9.0 as a pH indicator. It is a synthetic indicator. It is an indicator solution which turns colourless in the presence of acids.
