$25 \ mL$ of $0.1 \ M$ $HCl$ solution is diluted till $500 \ mL$. Calculate the $pH$ of the dilute solution. (in $.3$)

Equal volumes of three acid solutions of $pH$ $3$,$4$ and $5$ are mixed in a vessel. What will be the $H^{+}$ ion concentration in the mixture in terms of $\times 10^{-4} \ M$?

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

If $100 \, mL$ of a solution with $pH = 3$ is mixed with $400 \, mL$ of another solution with $pH = 3$,what will be the $pH$ of the resulting mixture?

The $pH$ of $0.01 \ N$ lime water is:

Calculate the $pH$ of $0.01 \ M$ sulphuric acid.