27. Why are carbonate and sulphide ores converted into oxides during the process of
extraction?
Answers
Answer:
Carbonate and sulphide ores are usually converted into oxides during the process of extraction. ... Answer: Obtaining a metal from its oxide is much easier than doing that from a metal sulphide or carbonate. Due to this; metal sulphides and carbonates are first converted to metal oxides during metallurgy
Explanation:
Answer:
Aluminium is a highly reactive metal and hence it easily reacts with the oxygen in air. This reaction results in the formation of a layer of aluminium oxide over the metal. The layer of aluminium oxide prevents further reaction of aluminium with oxygen. This makes aluminium a corrosion resistant material. Moreover, aluminium is a good conductor of heat. Due to these reasons, aluminium is used to make cooking utensils.
Carbonate and sulphide ores are usually converted into oxides during the process of extraction. Why?
Answer: Obtaining a metal from its oxide is much easier than doing that from a metal sulphide or carbonate. Due to this; metal sulphides and carbonates are first converted to metal oxides during metallurgy.
You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice. Explain why these sour substances are effective in cleaning the vessels.
Answer: A copper vessel becomes tarnished because of formation of a layer of copper carbonate or oxide over it. Acids react with carbonates and oxides and thus help in cleaning the copper vessel.