Question

The metal which is not corroded by air, water and acid is
(a) copper
(b)Zinc
(c) Aluminum
(d)gold ​

Answer 1

Answer:

d) gold

Explanation:

gold because gold is less reactive

its less reactive than all the other given metals

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Answer 2

(d) gold is not corroded by air, water and acid.

Explanation:

• Metals such as gold and platinum do not corrode visible because they are unaffected by oxygen and most acids.

• Gold is more stable than many of their compounds such as oxides or sulfides.

• This lack of chemical reactivity led to it being called a noble metal or chemically inert metal.

• Many metals form oxide like aluminium. It does not rust but form aluminium oxide when it comes in contact with oxygen.

• Gold do not rust and neither does it form any oxide of itself.