Question

Give reasons
(a)Platinum, gold and silver are used to make jewellery
(b)Sodium and potassium are stored under oil
(c)Aluminium is a highly reactive metal, still is used to make utensils for
cooking
(d) Carbonate and sulphide ores are usually converted into oxides during
the process of extraction​

Answer 1

a)becauase they are shiny and very expensive

b)because they are blast when they are in air contact

c) because after adding other metals it will become stainless steel

d)because it is easy to extract metal from its oxide ore by reduction reaction when compared to carbonate or sulphide

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