Question

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) a change in the partial pressure of oxygen in the air
(b) a change in the crystalline structure of tin
(c) an interaction with nitrogen of the air at very low
temperatures
(d) an interaction with water vapours contained in the
humid air

Answer 1

Answer:

Option (B) is correct.

Explanation:

This transformation is related to a change in crystalline structure of tin. This change in solid classification involves a change from metallic bonding with a relatively close packed structure to covalent bonding with directional non - close packed structure.

Answer 2

Hello Friend..!!

The answer of ur question is..!!

Option.D

Thank you..!!