Phenolphthalein is a synthetic indicator and its colours in acidic and basic solutions, respectively are
(a) red and blue
(b) blue and red
(c) pink and colourless
(d) colourless and pink

AcademicChemistryNCERTClass 7

Correct Answer: (d) colourless and pink

Explanation: Phenolphthalein remains colourless in acidic solution and turns pink in basic solution.

Updated on 10-Oct-2022 13:20:47