(i) `2 Mg (s) + O_(2) (g) overset(Delta)(to) 2 MgO(s) and 2 Mg(s) + N_(2) (g) overset(Delta)(to) underset("Mag. Nitride")(Mg_(3) N_(2)(s))`
(ii) `underset("Quick lime")(CaO(s)) + underset("Silica")(SiO_(2)) (s) overset(Delta)(to) underset("Calcium silicate") (CaSiO_(3) (s))`
(iii) It reacts with `Cl_(2)` to form calcium hypochlorite , `Ca(OCl)_(2)-a` constituent of bleaching powder
`underset("Slaked lime")(2 Ca(OH)_(2)) + 2 Cl_(2) to ubrace(CaCl_(2) + Ca(OCl)_2)_("Bleaching power") + 2H_(2)O`
(iv) `2 Ca(NO_(3))_(2) (s) overset(Delta) (to) 2 CaO(s) + 4 NO_(2) (g) + O_(2) (g)`