Question

Phenolphthalein is a synthetic indicator and its colours in acidic and basic
solutions, respectively are
O red and blue
O blue and red.
O pink and colourless​

Answer 1

Answer:

pink and colourless

Explanation:

Phenolphthalein is base indicator i.e it changes it's colour to pink in basic conditions but remains colourless in both acidic and neutral medium.