Question

give reasons:
1.metal replace hydrogen from dilute acids and non- metals do not
2.during the process of extraction, ores of sulphide and corbonate are converted into oxides.​

Answer 1

1. Metals replace hydrogen from dilute acids whereas non-metals do not. Non-metals are electronegative in nature. This means that their atoms can take up electrons and cannot lose them. Therefore, they do not evolve hydrogen on reacting with dilute acids.
2. 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.