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

• Magnesium burns in air with a dazzing light to form MgO

• Quick lime combines with silica to form slag(CaSiO₃)

• When chlorine is added to slaked lime we get bleaching powder.

• Calcium nitrate on heating, decomposes to give calcium oxide.