Question

Choose the odd one out.Give reasons for your choice:

1.Iron,copper,gold,brass
2.Aluminium,zinc,germanium,silver
3.Silver,oxygen,hydrogen,nitrogen
4.Silicon,germanium,arsenic and copper



Pls answer me as fast as possible.
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Answer 1

1.brass

2.gerimanium

3.silver because it not a gas .

Answer 2

Answer:

1) Brass because it is an alloy while others are individual elements

2) Germanium because it is a metalloid while others are metals

3) Silver because it is a metal while others are non metals

4) Copper because rest are metalloids while it is a metal