Question

Which of the following is(are) true about Phenolphthalein ?

• A. It gives a yellow colour till pH of 3.2
• B. It gives pink colour when pH=8.2 or above.
• C. It is colourless below pH of 8.2
• D. both b and c

Answer 1

The correct option is D both b and c

Phenolphthalein is colourless below pH of 8.2 and gives pink colour when pH=8.2 or above.