What happens when:

1.	What happens when:
Answer» magnesium is burnt in air Quicklime is heated with silica Chlorine REACTS with slaked LIME Calcium nitrate is heated Solution :(i). When magnesium is burnt in air, it gives brilliant flame forming magnesium oxide and magnesium nitride. `2Mg+O_(2)rarr2MgO`(Magnesium oxide) `3Mg+N_(2)rarrMg_(3)N_(2)` (Magnesium nitride) (ii). When quicklime `(CaO)` is heated with silica, it forms calcium SILICATE. `CaO+SiO_(2)overset(Above 1270 K)(rarr) underset(("Calcium sillicate"))(CaSiO_(3))` (iii). When chlorine reacts with slaked lime, it forms bleaching powder. `underset(("Slaked lime"))(Ca(OH)_(2))+Cl_(2)rarrunderset(("Bleaching powder"))(CaOCl_(2)+H_(2)O)` (iv). When calcium nitrate is heated, it decomposed to give `CaO,NO_(2)` and `O_(2)`. `2Ca(NO_(3))_(2)overset(rarr)2CaCO+4NO_(2)+O_(2)uarr`

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