Question

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 1

Answer:

becoz they r less reactive metals

Answer 2

Hey Dear,

◆ Answers with explanation -

(a) Platinum, gold and silver are used to make jewellery because they are noble metals and thus dont react with air & moisture.

(b) Sodium, potassium and lithium are stored under oil because they are highly reactive with air/water but unreactive with oil.

(c) Though aluminium is a highly reactive metal it resists corrosion, thus it is used to make utensils for cooking.

(d) Carbonate and sulphide ores are hard to extract, thus they usually converted into oxides for easier extraction.

Thanks dear...