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 get converted to grey powder, This transformation is related to

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

1.	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 get converted to grey powder, This transformation is related to
Answer» an interaction with water vapour CONTAINED in humid AIR a change in crystalline STRUCTURE of tin a change in the partial pressure of `O_(2)` in air an interaction with `N_(2)` of air at low temperature Answer :B