Which of the following is a mineral acid?

Mention the range of $pH$ value for identification of a base.

According to the Arrhenius theory,an acid is a hydrogen-containing compound that produces $..........$ in its aqueous solution.

$(i)$ Name the products obtained in the chlor-alkali process.
$(ii)$ Name the gases liberated at the anode and at the cathode,respectively.
$(iii)$ Name the solution which is used as raw material in this process.

In $H_{3}O^{+}$,there is a coordinate covalent bond between $......$ and $......$.

Which of the following is not a mineral acid?