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The soldiers of Napoleon army while at A...

The soldiers of Napoleon army while at Alps during freezing winter suffered a serious problem with regard to the tin buttons of their uniform. White metallic tin buttons get converted to grey powder. This transformation is relate to

A

an interaction with nitrogen of the air at very low temperature

B

a change in the crystalline structure of tin

C

an interaction with water vapour contained in the humid air

D

a change in the partial pressure of oxgen in the air .

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The correct Answer is:
B
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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

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