Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • 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 got converted to grey powde

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 got converted to grey powder. This transformation is related to

Option: 1

an interaction with nitrogen of the air at very low temperatures


Option: 2

a change in the crystalline structure of tin


Option: 3

a change in the partial pressure of oxygen in the air


Option: 4

an interaction with water vapour contained in the humid air.


Answers (1)

best_answer

As we have learned

Allotropy -

Phenomenon of existence of a chemical element in two or more forms differing in physical properties but having almost same chemical nature

-

 

 A the temprature decrease the form of tin changes from white tin (\beta - form)

to grey (\alpha - form)  \alpha - Sn  has much lower density.

Therefore, option (2) is correct.

 

Posted by

mansi

View full answer

Similar Questions

Latest Question