Take few zinc granules in a boiling tube and add some dilute hydrochloric acid to it. Do you observe anything happening around the zinc granules?

Write the balanced chemical equation for the following reaction:

Hydrogen $+$ Chlorine $\to$ Hydrogen chloride

Write the balanced chemical equation for the following reaction:

Sodium hydroxide $+$ Sulphuric acid $\to$ sodium sulphate water

Balance the given chemical equation:

${\mathrm{CH}}_4+{\mathrm{O}}_2\to {\mathrm{H}}_2\mathrm{O}+{\mathrm{CO}}_2$

Balance the given chemical equation:

$\mathrm{Fe}+{\mathrm{O}}_2\to {\mathrm{Fe}}_3{\mathrm{O}}_4$

Balance the given chemical equation:

${\mathrm{KClO}}_3\to \mathrm{KCl}+{\mathrm{O}}_2$