Write one equation each for decomposition reactions where energy is supplied in the form of heat, light or electricity.

Explanation

Decomposition reaction involving absorption of heat,
`underset("Zinc carbonate")(ZnCO_(3(s)))overset(Delta)tounderset("Zinc oxide")(ZnO_((s)))+underset("Carbon dioxide")(CO_(2(g)))`
Decomposition reaction involving absorption of light,
`underset("Hydrogen peroxide")(2H_(2)O_(2(l)))overset("Light")tounderset("Water")(2H_(2)O_((l)))+underset("Oxygen")(O_(2(g)))`
Decomposition reaction involving absorption of electrical energy,
`underset("Alumina")(2Al_(2)O_(3))overset("Electric current")tounderset("Aluminium")(4Al)+underset("Oxygen")(3O_(2(g)))`