Give reasons:
A. Platinum, gold and silver are used to make jewellery.
B. Sodium, potassium and lithium are stored under oil.
C. Aluminium is a highly reactive metal, yet it is used to make utensils for cooking.
D. Carbonate and sulphide ores are usually converted into oxides during the process of extraction.
Answer:A
Give reasons:
A. Platinum, gold and silver are used to make jewellery. B. Sodium, potassium and lithium are stored under oil. C. Aluminium is a highly reactive metal, yet it is used to make utensils for cooking. D. Carbonate and sulphide ores are usually converted into oxides during the process of extraction.