Starch can be used as an indicator for the detection of traces of

Which indicator can be used in the titration of a strong acid and a strong base?

Phenolphthalein is not a good indicator for titrating :-

Phenolphthalein is a.......

For an acid indicator with $K_{in} = 1.0 \times 10^{-5}$, the color change occurs when the concentration of the indicator is $1 \times 10^{-3} \ M$. Find the $pH$ at which the color change occurs.

The indicator used in the titration of $Na_2CO_3$ with $HCl$ is..................