Question

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state reason for third sentence
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Answer 1

Non metals always reacts with basic oxides not with acidic oxides

Hydrogen always reacts with higher metal kept at higher reactivity series

aluminium when reacts with oxygen it form aluminium oxide which is used in making utensils etc

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Answer 2

Explanation:

non metals can't displace hydrogen from the acids because hydrogen is placed higher than non metals in the reactivity series and is more reactive than non metals.

2 . hydrogen is a non metal hence it is placed higher in the reactivity series because it displaces metals like copper, silver etc from its solution.

3 Aluminium is a metal but yet it's corrosion is less than iron because iron is more reactive and is at higher position in the reactivity series.

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