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Question

Which of the following metals is found in the free state?


A

Sodium

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B

Platinum

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C

Iron

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D

Aluminium

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Solution

The correct option is B

Platinum


Explanation for correct option:

(B) Platinum:

  • Metals are found in nature both in the free and combined state.
  • Platinum, gold, silver, and copper are some of the metals found in the free state.
  • The reason for their occurrence in the free state is that they are less reactive.

Explanation for incorrect options:

(A) Sodium: Sodium is a reactive element and it is present in a combined form such as sodium chloride(NaCl)

(C) Iron: iron is also a reactive element and is present in the form of hematite(Fe2O3), magnetite (Fe3O4), etc.

(D) Aluminium: Aluminium is usually found in the form of bauxite and cryolite.

Therefore, option (B) is the correct answer.


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