Question

Observe the statements.

I. Phenolphthalein is a colourless solution
II. Phenolphthalein turns pink in basic solution
III. Phenolphthalein turns red in acidic solution
IV. Phenolphthalein remains colourless in acidic solution
Choose the correct option
a.I &II are correct
b.I & III are correct
c.I ,II & IV are correct
d.All the statements are correct

Answer 1

the observation of the third option is correct one.