What is the molarity of $H_2SO_4$ solution having $pH = 4$?

If the $pH$ of a solution is $2$,its normality will be

$pH$ of a $10 \ M$ solution of $HCl$ is

When an aqueous solution of a strong acid with $pH = 5$ is mixed with an equal volume of an aqueous solution of a strong acid with $pH = 3$,what will be the $pH$ of the resulting solution?

Calculate the $pH$ of $1.36 \times 10^{-2} \ M$ solution of perchloric acid.

$L$ litres of water must be added to $1 \, L$ of an aqueous solution of $HCl$ with a $pH$ of $1$ to create an aqueous solution with $pH$ of $2$?