A solution turns phenolphthalein indicator pink. The most likely pH of this solution will be :

(a) 6

(b) 4

(c) 9

(d) 7

Q.

An element X reacts with water to form a solution which turns phenolphthalein indicator pink.The element X is most likely to be:

(a) sulphur

(b) sodium

(c) carbon

(d) silicon

Q. The aqueous solution of one of the following salts will turn phenolphthalein indicator pink. This salt is:

Q.

The aqueous solution of one of the following salts will turn phenolphthalein indicator pink. This salt is :

(a) $KCl$

(b) $K_{2}S{O}_4$

(c) $K_{2}C{O}_3$

(d) $KN{O}_3$

Q. Phenolphthalein is a colourless indicator that turns pink in basic solution.

Q. If a solution changes the colour of phenolphthalein to pink, what is the pH of the solution likely to be? ​

a) 4
b) 1
c) 10
d) 7