The soldiers of Napolean army while at Alps during freezing…

Chemistry S and P - Block Elements (S - Block Elements Not In Syllabus ) Boron Family Single Correct MCQ

Published on: August 13, 2026

The soldiers of Napolean army while at Alps during freezing winter suffered a serious problem as regards to the tin buttons of their uniforms. White metallic tin buttons got converted to grey powder. This transformation is related to ;

A change in the crystalline structure of tin.

An interaction with nitrogen of the air at very low to temperature.

A change in the partial pressure of oxygen in the air.

An interaction with water vapour contained in the humid air.

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The correct answer is:

White metallic tin i.e. changes to another allotrope, the grey tin the at low temperature.

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