Question

Give reason
A.gold and silver are used to make jewellery
B.carbonate and sulphide ores are usually converted into oxides prior to reduction during the process of extraction

Answer 1

Answer:

A. they are very ductile and malleable.

B. they contain many inpurities that make its usage hard.

Answer 2

Answer:

1) Gold and Silver are used for making jewellery because they hardly react with water that 's why they didn 't get rust and they look superior they are not destroyed by chemical reaction... Gold and silver are used to make jewellery because they are precious and expensive metals.

2)Carbonate and sulphide ores are usually converted into oxides during the process of extraction to 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.

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