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 buttoms got converted to grey powder. This transformation is related to

Answer»

a change in the partial pressure of oxygen in the air
a change of the crystalline STRUCTURE of tin
an INTERACTION with nitrogen of the air at very low temperature
an interaction with water VAPOUR contained in the humid

Solution :Grey tin `harr` White tin
Grey tin is brittle and crumbles down to powder in very cold climate. ltbr. The CONVERSION of grey tin to white tin is accopained by increase in volume,this is known as tin plaque or tin disease.


Discussion

No Comment Found

Related InterviewSolutions