Question

What happens when (i) magnesium is burnt in air (ii) quick lime is heated with silica (iii) chlorine reacts with slaked lime (iv) calcium nitrate is heated ?

Answer 1

(i) Magnesium burns in air with a dazzling light to form MgO and Mg₃N₂.

(ii) Quick lime (CaO) combines with silica (SiO₂) to form slag.

(iii) When chloride is added to slaked lime, it gives bleaching powder.

(iv) Calcium nitrate, on heating, decomposes to give calcium oxide.