If $pH$ of $A$,$B$,$C$ and $D$ are $9.5$,$2.5$,$3.5$ and $5.5$ respectively,then the strongest acid is

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

The $pH$ of a $10^{-8} \ M \ HCl$ aqueous solution is ......

Assuming that $Ba(OH)_{2}$ is completely ionised in aqueous solution under the given conditions,the concentration of $H_{3}O^{+}$ ions in $0.005 \, M$ aqueous solution of $Ba(OH)_{2}$ at $298 \, K$ is $..... \times 10^{-12} \, mol \, L^{-1}$. (Nearest integer)

Calculate the $pH$ of the following solutions:
$(a)$ $0.002 \ M \ HNO_3$
$(b)$ $0.06 \ M \ H_2SO_4$

The $pH$ value of $1.0 \times 10^{-8} \ M \ HCl$ solution is less than $8$ because