The soliders of Napolean army while at Alps during freezing winter suffered a serious problem as regards the tin buttongs of their uniforms. White metallic tin buttons got converted into grey powder. This transformation is related toA. an interaction with nitrogen of the air at very low temperaturesB. a change in the crystallines structure of tin.C. a change iin the partial pressure of oxygen in the air.D. an interaction with water vapour contained in the humid air.

The soliders of Napolean army while at Alps during freezing winter suf

1.	The soliders of Napolean army while at Alps during freezing winter suffered a serious problem as regards the tin buttongs of their uniforms. White metallic tin buttons got converted into grey powder. This transformation is related toA. an interaction with nitrogen of the air at very low temperaturesB. a change in the crystallines structure of tin.C. a change iin the partial pressure of oxygen in the air.D. an interaction with water vapour contained in the humid air.
Answer» Correct Answer - B

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